does working from home work evidence from a chinese experiment about 10 of us employees now regularly work from home wfh but there are concerns this can lead to shirking from home we report the results of a wfh experiment at ctrip a 16 000 employee nasdaq listed chinese travel agency call center employees who volunteered to wfh were randomly assigned to work from home or in the office for 9 months home working led to a 13 performance increase of which about 9 was from working more minutes per shift fewer breaks and sick days and 4 from more calls per minute attributed to a quieter working environment home workers also reported improved work satisfaction and experienced less turnover but their promotion rate conditional on performance fell due to the success of the experiment ctrip rolled out the option to wfh to the whole firm and allowed the experimental employees to re select between the home or office interestingly over half of them switched which led to the gains from wfh almost doubling to 22 this highlights the benefits of learning and selection effects when adopting modern management practices like wfh

international evidence on the demand for money one of the current questions in the literature on the demand for money is whethe r the adjustment of actual to desired money holdings is in nominal or real terms this paper describes a simple procedure that can be used to test the nominal against the real hypothesis the test is carried out for twenty seven countries the paper also tests the structural stability of the demand for money equations and the correctness of th e dynamic specification the results are strongly in favor of the nom inal adjustment hypothesis there is however some evidence of moder ate structural instability before and after 1973 the instability doe s not affect the conclusion that the nominal adjustment hypothesis do minates the real adjustment hypothesis copyright 1987 by mit press

can there be a market for cheap talk information an experimental investigation abstract this paper reports on experiments testing the viability of markets for cheap talk information we find that the level of trade in these markets is very small and eventually vanishes sellers provide low quality information even when doing so does not increase their monetary payoff this contributes to the low demand in the market for information moreover we observe the same very low level of activity in the market for information when sellers face no conflict of interest and the noise in the quality of the transmitted information is much lower hence we argue that the collapse of the market for information is a demand phenomenon and even small uncertainty over the quality of information seems to have a large impact

target zone models with stochastic realignments an econometric evaluation abstract this paper provides empirical support for the second generation of target zone models with stochastic devaluation risk i propose a simple non linear framework with a time varying probability of exchange rate realignment this model nests alternatives i with no devaluation risk ii with constant devaluation risk and iii the random walk i reject these three in favor of a stochastic realignment model where devaluation risk varies with economic fundamentals the model predicts 13 of 17 realignments for the franc and lira including an out of sample episode in august 1993

the proper scope of government theory and an application to prisons when should a government provide a service in house and when should it contract out provision we develop a model in which the provider can invest in improving the quality of service or reducing cost if contracts are incomplete the private provider has a stronger incentive to engage in both quality improvement and cost reduction than a government employee has however the private contractor s incentive to engage in cost reduction is typically too strong because he ignores the adverse effect on noncontractible quality the model is applied to understanding the costs and benefits of prison privatization

school governance teacher incentives and pupil teacher ratios experimental evidence from kenyan primary schools this brief summarizes the results of a gender impact evaluation study entitled school governance teacher incentives and pupil teacher ratios experimental evidence from kenyan primary schools conducted between 2005 and 2006 in kenya the study observed the impact of a program under which kenyan parent teacher associations ptas at randomly selected schools were funded to hire an additional teacher on a renewable contract outside normal ministry of education civil service channels at one quarter normal compensation levels on the student teacher and school level despite a dramatic reduction in class size the program generated little improvement for students who remained in the standard system civil service teachers were 13 points less likely to be found in class teaching if their school received funding to hire a contract teacher the program increased test scores by 28 percent of a standard deviation for those students assigned to pta contract teachers there is strong evidence that locally hired and monitored teachers had better incentives they were 15 percent more likely to be in class teaching during unannounced spot checks the school based management program had significant positive impacts on the tendency for civil service teachers to cut effort in response to introduction of a contract teacher funding for the study derived from the world bank government of netherlands

a model of the term structure of interest rates in an open economy with regime shifts abstract this paper presents a term structure model driven by three factors the foreign real interest rate the domestic inflation rate and the real exchange rate the model is designed to capture effects originating from exchange rate fluctuations and actions by central banks special attention is paid to regime shifts such as changes in the target inflation rate and devaluations an interesting result is that imperfect credibility of a target zone for the exchange rate mainly affects short term interest rates whereas a loss in an inflation target s credibility is likely to increase long term interest rates jel e43 f3 1997 elsevier science ltd

public goods in networks this paper considers incentives to provide goods that are non excludable along social or geographic links we find first that networks can lead to specialization in public good provision in every social network there is an equilibrium where some individuals contribute and others free ride in many networks this extreme is the only outcome second specialization can benefit society as a whole this outcome arises when contributors are linked collectively to many agents finally a new link increases access to public goods but reduces individual incentives to contribute hence overall welfare can be higher when there are holes in a network

the economics of hubs the case of monopoly in this paper we study the optimization problem of an unregulated air carrier which is given the exclusive right to satisfy demand for air travel between any pair of cities it chooses a network of connections and a set of prices to maximize profits thus both network design and prices are endogenous we characterize the solution to this optimization problem when demands and costs are symmetric our main result is that if there are economies of density in the number of individuals travelling between two directly connected cities the optimal network is either a hub of size n 1 or one in which every pair of cities is connected directly

remedying education evidence from two randomized experiments in india this paper presents the results of a two year randomized evaluation of a large scale remedial education program conducted in mumbai and vadodara india the remedial education program hires young women from the community to teach basic literacy and numeracy skills to children who reach standard three or four without having mastered these competencies the program implemented by a ngo in collaboration with the government is extremely cheap it cost 5 dollars per child per year and is easily replicable it has been implemented in 20 indian cities and reached tens of thousands of children we find the program to be very effective on average it increased learning by 0 15 standard deviations in the first year and 0 25 in the second year the gains are the largest for children at the bottom of the distribution children in the bottom third gain 0 2 standard deviations in the first year and 0 32 in the second year in math they gain 0 51 standard deviation in the second year the results are similar in the two grade levels and in the two cities at the margin extending this program would be up to 12 16 times more cost effective than hiring new teachers authors

central bank interventions and exchange rate band regimes abstract this paper presents an endogenous switching regression model for the exchange rate process where the switch is defined by the central bank criteria functions for intervening we study the signal effect of interventions on the exchange rate using norwegian daily data on official interventions we first find that interventions seemed to have been more effective in moving the exchange rate in the expected desired direction in the regime when the exchange rate was kept away from the edges of the band this type of intervention regime also reduces significantly the conditional volatility of the exchange rate thus when the exchange rate was near the weakest edge of the currency band its conditional variance was significantly larger than when it was moving around its central parity finally we show that in order to obtain consistent estimates intervention variables cannot enter as exogenous variables in the conditional mean or conditional variance of the exchange rate

on the mean reverting properties of target zone exchange rates a cautionary note abstract we estimate a franc mark target zone model and find a very limited honeymoon effect monte carlo experiments calibrated with the estimates caution against the use of standard linear tests for non mean reversion as indirect tests of the target zone model

optimal prizes in dynamic elimination contests theory and experimental evidence abstract this paper investigates the implications of different prize structures on effort provision in dynamic two stage elimination contests theoretical results show that for risk neutral participants a structure with a single prize for the winner of the contest maximizes total effort while a structure with two appropriately chosen prizes a runner up prize and a final prize ensures incentive maintenance across stages in contrast a structure with two prizes may dominate a winner takes all contest in both dimensions if participants are risk averse evidence from laboratory experiments is largely consistent with these predictions suggesting that contest design should account for risk attitudes of participants

modelling probabilities of devaluations i show why when the realized rates of depreciation within the exchange rate band are regressed on a given information set and conditioned on ex post actual no realignment a la drift adjustment a peso problem is still encountered the reason is that the frequency of realignments in the data need not be the same as the frequency of the even small subjective probabilities that a realignment may take place i suggest an alternative approach to solve the peso problem and provide consistent estimates my estimates of the expected realignment rates are greater than the ones obtained using the drift adjustment method

assessing target zone credibility mean reversion and devaluation expectations in the erm 1979 1992 abstract the paper presents estimates of devaluation expectations for six erm currencies relative to the deutsche mark for the period march 1979 april 1992 both the simplest test and the drift adjustment method are used the simplest test adjusts interest rate differentials for the maximum and minimum expected rate of depreciation within the exchange rate band the drift adjustment method adjusts interest rate differentials by the estimated expected rate of depreciation within the band the latter method gives more precise estimates especially for short horizons and allows statistical inference and hypothesis testing expected rates of devaluation have generally fallen during the period still some devaluation expectations relative to the deutsche mark remain in 1992 except for the belgian luxembourg franc and the netherlands guilder expected rates of devaluation have fluctuated more than interest rate differentials

determinants of the implied shadow exchange rates from a target zone abstract the paper provides a continuous time model of the dynamic behavior of exchange rates and interest rates when exchange rates are managed within a target zone with the possibility of realignments in the case of a realignment the exchange rate jumps to a shadow exchange rate the timing of realignments is modelled by a cox process with an intensity that depends on the location of the exchange rate in the target zone band as well as the distance to the shadow exchange rate we set up an approximate maximum likelihood estimation approach and provide parameter estimates for six erm target zones moreover in the empirical analysis we filter out the shadow exchange rates and investigate which fundamental macroeconomic factors are able to explain the short run and long run behavior of the filtered shadow exchange rates

political and institutional factors in regime changes in the erm an application of duration analysis this paper analyses the functioning of the european exchange rate mechanism erm to that end we apply duration models to estimate an augmented target zone model explicitly incorporating political and institutional factors into the explanation of european exchange rate policies the estimations are based on quarterly data of eight currencies participating in the erm covering the complete history of the european monetary system our results suggest that both economic and political factors are important determinants of erm currency policies concerning economic factors the money supply the real exchange rate the interest rate in germany and the central parity deviation would have negatively affected the duration of a given central parity while credibility and the price level in germany would have positively influenced such duration regarding political variables elections central bank independence and left wing administrations would have increased the probability of maintaining the current regime while unstable governments would have been associated with more frequent regime changes moreover we show how the political augmented model outperforms the model which just incorporates pure economic determinants both in terms of explanatory power and goodness of fit

soft versus hard targets for exchange rate intervention when targeting money prices or credit monetary authorities typically follow rules that combine flexibility over short horizons with discipline over longer horizons usually by committing to average targets for monetary aggregates or inflation over pre specified periods yet when targeting exchange rates monetary authorities typically follow rules that require strict adherence to announced targets in both the short and the long run in this paper we explore the implications of a policy for exchange rate intervention that combines flexibility over short horizons with discipline over long horizons our version of this soft target zone related to an idea ofjohn williamson 1985 requires a monetary authority to maintain the exchange rate on average rather than at all times as in the erm within a pre announced band we study the implications of this policy for the volatility of exchange rates and for the vulnerability of the exchange rate arrangement to speculative attacks practical reasons including the difficulty of targeting money and inflation on a continuous basis contribute to common use of soft i e average rules when targeting these aggregates more important however average targets allow

destabilizing effects of exchange rate escape clauses abstract this paper studies policy rules with escape clauses analyzing as an example fixed exchange rate systems that allow member countries the freedom to realign in periods of stress while well designed escape clause rules can raise society s welfare in principle limited credibility makes it difficult to implement such rules in practice an ems type institution that imposes political costs on policymakers who realign may raise welfare but can also produce equilibria far inferior to an irrevocably fixed exchange rate switches between multiple equilibria may have the character of sudden speculative attacks

charters without lotteries testing takeovers in new orleans and boston charter takeovers are traditional public schools restarted as charter schools we develop a grandfathering instrument for takeover attendance that compares students at schools designated for takeover with a matched sample of students attending similar schools not yet taken over grandfathering estimates from new orleans show substantial gains from takeover enrollment in boston grandfathered students see achievement gains at least as large as the gains for students assigned charter seats in lotteries a non charter boston turnaround intervention that had much in common with the takeover strategy generated gains as large as those seen for takeovers while other more modest turnaround interventions yielded smaller effects

network structure and strategic investments an experimental analysis abstract this paper experimentally analyzes the effect of network structures on individuals decisions in a game of strategic substitutes the theoretical basis for our experiment is the model of bramoulle and kranton 2007 as predicted we find that individuals are able to coordinate on equilibria but that coordination strongly depends on the network structure despite frequent coordination failures in graphs of size n 4 equilibrium play seems easier on network architectures with high low density and low high centrality if play converges it almost exclusively does so towards the predicted equilibria theoretical results with respect to welfare are also confirmed next to global graph structural properties we also explore the effects of local and individual factors we find that behavior on networks is affected by the number of direct neighbors but not by individuals risk attitudes apparently the global and the local structure of a network does not leave much explanatory room for individual effects that pertain to risk taking

expected and predicted realignments the ff dm exchange rate during the ems an empirical model of time varying realignment risk in an exchange rate target zone is developed expected rates of devaluation are estimated as the difference between interest rate differentials and estimated expected rates of depreciation within the exchange rate band using french franc deutsche mark data during the european monetary system the behavior of estimated expected rates of depreciation accord well with the theoretical model of bertola svensson 1990 we are also able to predict actial realignments with some success

an arbitrage free trilateral target zone model abstract this paper proposes an arbitrage free trilateral model of a credible target zone regime with bands on each bilateral exchange rate the no arbitrage condition reduces the system to only two dimensions any two rates must obey their own boundaries but in addition the free rein for movements is restricted by the band of the redundant rate therefore target zone models defined in bilateral settings do not apply to general systems with a cobweb of bilateral bands such as the european monetary system since the model has no known analytical solution it is estimated by the method of simulated moments

modelling the ff mm rate by threshold cointegration analysis this paper investigates a sticky price model of exchange rate determination extension of krugman s target zone model with price inertia applied to the french franc a novel theoretical argument is considered threshold cointegration such that the long run relationship between the parity and its fundamentals is dormant within a certain range of disequilibria but is restored when the system crosses the boundaries over the period 1987 1993 nonlinearities in the ff dm rate consistent with the credibility of this target zone were detected by pointing out a band reversion mechanism a shock persistence analysis which highlights a nonlinear reversion of the exchange rate deviation is also implemented

assessing the credibility of a target zone evidence from the ems this paper provides some new evidence on the credibility of the exchange rate mechanism erm of the european monetary system ems the study differs from previous research in the literature in three main respects first the main contribution is the use of several credibility indicators some of which have never been applied before to all of the currencies under study this allows one to strengthen the results obtained in this paper second a longer period than that of previous studies is analysed covering the complete ems history third a comparison has been made of the prediction qualities of the different indicators in order to explore their ability to capture the main erm events realignments changes in the fluctuations bands and speculative pressures fourth the indicators are applied to the experience of the new modified erm linking the currencies of non euro area member states to the euro showing the relevance of this approach in the near future with the enlargement of the european union

identity and the economics of organizations on plebes first day at west point called r day they strip down to their underwear their hair is cut off they are put in uniform they then must address an older cadet with the proper salute and with the statement sir new cadet doe reports to the cadet in the red sash for the first time as ordered plebes must stand and salute and repeat and stand and salute and repeat until they get it exactly right all the while being reprimanded for every tiny mistake in the summary of david lipsky 2003 pp 145 154 who spent four years tracking a company of cadets at west point on r day you surrender your old self in stages but r day is just the beginning of the training and personal re engineering that is to come so that west point graduates emerge four years later as loyal officers in the u s army lipsky shows that despite some failure this tough program is remarkably successful in creating officers with the will to lead in battle economists current picture of organizations and work incentives has no place for the west point program and the motivations it seeks to inculcate in recruits in a standard economic model an individual s preferences are fixed and utility depends only on pecuniary variables the army s aim at west point is to change cadets preferences they wish to inculcate non economic motives in the cadets so that they have the same goals as the u s army alternatively stated the goal of west point is to change the identity of the cadets so they will think of themselves above all else as officers in the u s army they will feel bad about themselves they will lose utility if they fall short of the ideals of such an officer this change in identity

soft exchange rate bands and speculative attacks theory and evidence from the erm since august 1993 we present a model of a soft exchange rate target zone and interpret it as a stylized description of the post august 1993 erm our central bank targets a moving average of the current and past exchange rates rather than the exchange rate s current level thus allowing the rate to move within wide margins in the short run but within narrow margins in the long run for realistic parameters soft target zones are significantly less vulnerable to speculative attacks than hard target zones these predictions are consistent with the erm s experience and the abatement of speculative pressure in european markets since the bands widening in 1993

the term structure with semi credible targeting the federal reserve sets targets for interest rates which it enforces through direct market intervention these targets are changed periodically in this paper we develop a term structure model in which the short rate is subject to a control which keeps it close to a target which changes from time to time the probability of target changes is not constant in the model but changes as a function of observables the model performs well at explaining the shifts in the yield curve that accompany target changes in u s financial markets the federal reserve bank the fed is a unique player usually we assume that market participants are price takers in financial markets however there is evidence that this is not true of the fed in fact the fed sets targets for short term rates which it attempts to maintain by market intervention injecting or withdrawing funds from the market to keep the rates near their targets targets are changed from time to time and market participants know when such a target change occurs they may in fact have some limited ability to forecast such target changes several recent papers have provided evidence that models which allow the short rate to revert toward a mean which is itself a random process perform

interest rate speculative attacks and target zones abstract we study the behavior of the interest rate differential in a non sustainable exchange rate target zone we show that the relation between the interest rate differential and the fundamentals before the speculative attack is dependent on the expected post attack monetary policy

social hierarchies a laboratory study on punishment patterns across networks we experimentally study punishment patterns across network structures and their effect on cooperation in a repeated public goods setting subjects can only observe and punish their neighbors centralized structures like the star network outperform other incomplete networks and reach contribution levels like the ones observed in a complete network our results suggest that hierarchical network structures with a commonly observed player benefit more from sanctions not because central players punish more but because they follow and promote different punishment patterns while quasi central players in other incomplete architectures like the line network retaliate and get trapped in the vicious circle of antisocial punishment central players in the star network do not punish back increase their contributions when sanctioned by peripheral players and sanction other participants in a prosocial manner our results illustrate recent field studies on the evolutionary prevalence of hierarchical networks we document a network based rationale for this positive effect in an identity free fully anonymous environment jel c72 c91 c92 d90 h41

a new breed of exchange rate bands chile israel and mexico following inflation stabilization programmes where a fixed exchange rate is used as an anchor a number of countries have gradually shifted towards a regime of increased flexibility in particular chile israel and mexico have adopted for a few years a regime of crawling exchange rate bands this article documents and analyzes their unique experience of immediate concern is the question whether the shift from fixed to crawling bands is perceived as the signal of a tilt towards policy relaxation on the contrary it could be seen as a way of restoring external competitiveness after a period of real appreciation the evidence collected in this article supports the latter view as a way of moving towards a sustainable equilibrium the shift to crawling bands is found to have a stabilizing influence on financial markets on inflation expectations and on the passthrough from exchange rates to prices

the economic consequences of social network structure we survey the literature on the economic consequences of the structure of social networks we develop a taxonomy of macro and micro characteristics of social interaction networks and discuss both the theoretical and empirical findings concerning the role of those characteristics in determining learning diffusion decisions and resulting behaviors we also discuss the challenges of accounting for the endogeneity of networks in assessing the relationship between the patterns of interactions and behaviors

the aggregate effect of school choice evidence from a two stage experiment in india we present experimental evidence on the impact of a school choice program in the indian state of andhra pradesh that provided students with a voucher to finance attending a private school of their choice the study design featured a unique two stage lottery based allocation of vouchers that created both student level and market level experiments which allows us to study the individual and the aggregate effects of school choice including spillovers after two and four years of the program we find no difference between test scores of lottery winners and losers on telugu native language math english and science social studies suggesting that the large cross sectional differences in test scores across public and private schools mostly reflect omitted variables however private schools also teach hindi which is not taught by the public schools and lottery winners have much higher test scores in hindi furthermore the mean cost per student in the private schools in our sample was less than a third of the cost in public schools thus private schools in this setting deliver slightly better test score gains than their public counterparts better on hindi and same in other subjects and do so at a substantially lower cost per student finally we find no evidence of spillovers on public school students who do not apply for the voucher or on private school students suggesting that the positive effects on voucher winners did not come at the expense of other students jel codes c93 h44 h52 i21 o15

principles of network development and evolution an experimental study this paper reports on an experimental investigation of the evolution of networks and the individual decision making processes that guide it inasmuch as there is no history of experimental work on network formation part of the paper is devoted to the formulation of problems that can be examined experimentally the results are that networks composed of decentralized decision makers are capable of overcoming complex coordination and learning problems and converge to stationary when it does not occur significant and persistent inefficiencies can result the models of equilibration based on the principle of nash equilibrium are more reliable than models based on the alternative principles of efficiency seeking or focalness of the network configuration however individual decision making within networks is not in accordance with the simple decision rules of nash best response instead we observed complicated strategies that appear to trade short term profits in order to signal to and teach other agents the strategies required for long term profit maximization

price barriers in the dow jones industrial average this study tests the popular claim that the djia s movements around key reference points affect investor sentiment and thus price behavior it is found that the djia s rise and fall is indeed restrained by support and resistance levels at multiples of 100 e g 2800 2900 3000 etc but that having broken through a 100 level the djia then moves by more than otherwise warranted a monte carlo study and comparisons with other indices confirm the significance of these findings this suggests that some agents may trade on the basis of the djia but does not necessarily suggest that the market is inefficient

information acquisition and exchange in social networks a central feature of social networks is information sharing the internet and related computing technologies shape the relative costs of private information acquisition and forming links with others this article presents an experiment on the effects of changing costs we find that a decline in relative costs of linking makes private investments more dispersed and gives rise to denser social networks aggregate investment falls but individuals access to investment remains stable due to increased networking the overall effect is an increase in individual utility and aggregate welfare

financial markets views about the euro swiss franc floor exchange rates and option prices incorporate market participants views about the credibility and the effects of exchange rate targets i present a model to determine exchange rates under policy targets that can be used to price options the model is estimated with euro swiss franc exchange rate and options price data in the first few months of the minimum exchange rate policy the implied survival probability of the policy for a 3 month horizon was typically less than 75 over time the credibility increased and this probability reached 95 in august 2014

does management matter in schools we collect data on management practices in over 1 800 high schools in eight countries we show that higher management quality is strongly associated with better educational outcomes the uk sweden canada and the us obtain the highest management scores followed by germany with a gap before italy brazil and india we also show that autonomous government schools government funded but with substantial independence like uk academies and us charters have higher management scores than regular government or private schools almost half of the difference between the management scores of autonomous and regular government schools is accounted for principal leadership and governance there are major disparities in the quality of education within and between countries oecd 2012 school managerial practices may be an important reason for such differences unfortunately understanding the role of management in schools within and across countries has been held back by a lack of robust and comparable instruments to systematically measure management practices and thus a lack of good data the key purpose of this article is to develop an international management index for schools and present descriptive evidence on management quality and education outcomes across schools of different types within and across countries we used double blind telephone interviews with school principals to collect information on management practices for over 1 800 schools across eight countries to construct our management index we average across 20 basic management practice measures in four areas of management operations monitoring target setting and people each question is evaluated against a scoring grid that ranges from one worst practice to five best practice our management index for each school represents the average of these scores we also constructed measures of school level pupil outcomes for these schools when data were available from examination results across regions and countries creating a matched management pupil outcome international data set at the school level these data allow us to document some stylised facts first we show that the adoption of basic managerial practices varies significantly across and within countries the uk sweden canada and the us obtain the highest average scores followed by germany italy and brazil while india has the lowest scores about half of the variance in school management is at the country level this share is larger in education than we have

experiments with network formation abstract we examine how groups of agents form trading networks in the presence of idiosyncratic risk and the possibility of contagion specifically four agents play a two stage finite repeated game in the first stage the network structure is endogenously determined through a non cooperative proposal game in the second stage agents play multiple rounds of a coordination game against all of their chosen neighbors after the realization of a payoff relevant shock while parsimonious our four agent environment is rich enough to capture all of the important interaction structures in the networks literature bilateral marriage local interaction star and uniform matching consistent with our theory marriage networks are the most frequent and stable network structures in our experiments we find that payoff efficiency is around 90 percent of the ex ante payoff dominant strategies and the distribution of network structures is significantly different from that which would result from random play

implicit bands in the yen dollar exchange rate this article attempts to identify implicit exchange rate regimes for the yen dollar exchange rate to that end we apply a sequential procedure that considers both the dynamics of exchange rates and central bank interventions to data covering the period from 1971 to 2003 our results suggest that implicit bands existed in two subperiods april december 1980 and march october 1987 the latter coinciding with the louvre accord furthermore the study of the credibility of such implicit bands indicates the high degree of confidence attributed by economic agents to the evolution of the yen dollar exchange rate within the detected implicit band rate thus lending further support to the relevance of such implicit bands

injecting charter school best practices into traditional public schools evidence from field experiments this study examines the impact on student achievement of implementing a bundle of best practices from high performing charter schools into low performing traditional public schools in houston texas using a school level randomized field experiment and quasi experimental comparisons the five practices in the bundle are increased instructional time more effective teachers and administrators high dosage tutoring data driven instruction and a culture of high expectations the findings show that injecting best practices from charter schools into traditional houston public schools significantly increases student math achievement in treated elementary and secondary schools by 0 15 to 0 18 standard deviations a year and has little effect on reading achievement similar bundles of practices are found to significantly raise math achievement in analyses for public schools in a field experiment in denver and program in chicago jel codes i21 i24 i28 j24

second degree moral hazard in a real world credence goods market in a field experiment in the market for taxi rides we investigate a phenomenon called second degree moral hazard the tendency of the supply side in a market to react to anticipated moral hazard on the demand side by increasing the extent or price of the service our moral hazard manipulation consists of some passengers explicitly stating that their expenses will be reimbursed this has a strong positive effect on the likelihood and the amount of overcharging and consequently increases consumer expenditure our results suggest that second degree moral hazard may have a severe impact on the provision of credence goods

a univariate analysis of ems exchange rates using a target zone model summary the models in the literature on exchange rate target zones imply a non linear time series model for the exchange rate we show how the parameters of such models can be estimated and develop maximum likelihood and method of simulated moments estimators for the target zone model of krugman 1991 the maximum likelihood estimator is based on a computationally attractive approximation to the exact predictive density of the continuous time model monte carlo experiments are used to assess the properties of this estimator in the empirical part we estimate the model with data on recent ems exchange rates we find that the krugman 1991 target zone model is not able to explain the full observed kurtosis and conditional heteroscedasticity of the exchange rate returns

the effects of generalized school choice on achievement and stratification evidence from chile s voucher program in 1981 chile introduced nationwide school choice by providing vouchers to any student wishing to attend private school as a result more than 1000 private schools entered the market and the private enrollment rate increased by 20 percentage points with greater impacts in larger more urban and wealthier communities we use this differential impact to measure the effects of unrestricted choice on educational outcomes using panel data for about 150 municipalities we find no evidence that choice improved average educational outcomes as measured by test scores repetition rates and years of schooling however we find evidence that the voucher program led to increased sorting as the bbestq public school students left for the private sector d 2005 elsevier b v all rights reserved

target zones and realignments recent contributions emphasize that the presence of exchange rate target zones has important effects on the within band behavior of exchange rates when agents are forward looking the authors find that the implications of available models are inconsistent with european exchange rate data and they suggest that the frequent realignments occurring in the period they consider may be responsible for this they construct a model in which the likelihood of a realignment in the near future increases as the exchange rate approaches the limits of its fluctuation band and show that its implications are broadly consistent with the evidence copyright 1992 by american economic association

outsourcing education experimental evidence from liberia in 2016 the liberian government delegated management of 93 randomly selected public schools to private providers providers received us 50 per pupil on top of us 50 per pupil annual expenditure in control schools after one academic year students in outsourced schools scored 0 18 higher in english and mathematics we do not find heterogeneity in learning gains or enrollment by student characteristics but there is significant heterogeneity across providers while outsourcing appears to be a cost effective way to use new resources to improve test scores some providers engaged in unforeseen and potentially harmful behavior complicating any assessment of welfare gains

water for life the impact of the privatization of water services on child mortality while most countries are committed to increasing access to safe water and thereby reducing child mortality there is little consensus on how to actually improve water services one important proposal under discussion is whether to privatize water provision in the 1990s argentina embarked on one of the largest privatization campaigns in the world including the privatization of local water companies covering approximately 30 percent of the country s municipalities using the variation in ownership of water provision across time and space generated by the privatization process we find that child mortality fell 8 percent in the areas that privatized their water services and that the effect was largest 26 percent in the poorest areas we check the robustness of these estimates using cause specific mortality while privatization is associated with significant reductions in deaths from infectious and parasitic diseases it is uncorrelated with deaths from causes unrelated to water conditions

job contact networks abstract many workers hear about or obtain their jobs through friends and relatives the aim of this paper is twofold first we relate both individual and aggregate labor market outcomes to the network structure of personal contacts second we study strategic network formation to this purpose we develop a model specifying at the individual level both the decision to form contacts with other agents and the process by which information about jobs is obtained and transmitted we show that equilibrium networks always exist and that only moderate levels of network asymmetry can be sustained at equilibrium also we establish a general non monotonicity result on information flow and unemployment with respect to network size in symmetric networks

portfolio choice and risk attitudes an experiment i introduction suppose an investor is faced with a decision concerning how to allocate financial resources between a risky lottery asset with a higher expected return and an asset with a fixed and guaranteed lower return is the choice of portfolio independent of preferences outside the standard neoclassical model in experiments with financial incentives we study how portfolio choice depends on three well documented behavioral phenomena ambiguity aversion the illusion of control and myopic loss aversion we also investigate whether participants are willing to explicitly pay a small sum of money to indulge such preferences pay for more perceived control less ambiguity or more frequent opportunities to change the portfolio based on feedback about its performance while standard finance theory presumes that investors successfully identify and process information relevant to reaching optimal decisions in recent years a body of empirical evidence suggests that there are systematic departures from this behavior behavioral finance is concerned with psychological influences in financial decision making and markets investors make decisions while trying to stay afloat in a sea of uncertainty when predictability is low people may be prone to unjustified beliefs that may survive and even flourish in such an environment 1 people may resort to rules of thumb on a conscious or subconscious level to the extent that psychological influences are present it is economically important to consider which of these actually affect risk attitudes and portfolio choice a key issue is whether any such influences disappear when monetary incentives are present we pursue a systematic experimental comparison of three of the most prominent behavioral phenomena documented in the literature the illusion of control langer 1975 is concerned with greater confidence in one s predictive ability or in a favorable outcome when one has a higher degree of personal involvement even when one s involvement is not actually relevant ambiguity aversion ellsberg 1961 is the desire to avoid unclear circumstances even when this will not increase the expected utility myopic loss aversion benartzi and thaler 1995 combines loss aversion kahneman and tversky 1979 tversky and kahneman 1992 and a tendency to evaluate outcomes frequently this combination leads investors to be more willing to invest a greater proportion of their portfolio in risky assets if they evaluate their investments less frequently we show that these phenomena are present with monetary incentives and also investigate whether people are willing to pay money to accommodate such preferences or whether they are closer to the rational model when incentives are present with the procedure we chose the willingness to actually pa for such preferences depends on the preference the great majority of investors pay for less ambiguity or more frequent feedback investment opportunities but fewer than 10 pay to roll a determinative die themselves 2 we then examine how the preferences between lotteries in the different treatments affect portfolio choice we have participants allocate their investment capital between an asset with a sure return and a risky asset with a higher expected rate of return in fact there is very little variation in investment behavior across any of the illusion of control or ambiguity aversion treatments in contrast the results found in previous experimental studies of myopic loss aversion suggest that participants invest less in their preferred option the main conclusion we draw from these findings is that the relation between which procedure or lottery people prefer and how much they are willing to actually invest in this lottery is not trivial at all people are generally unwilling to pay even small amounts of money to indulge the illusion of control and it does not influence their portfolio choice people are generally willing to pay money for less ambiguity but having less ambiguity does not influence their portfolio choice finally in some cases people are willing to pay money for more frequent feedback and opportunities to change their portfolio but again previous studies have shown that people invest less with this additional information and greater flexibility

explaining forward exchange bias intraday intraday interest rates are zero consequently a foreign exchange dealer can short a vulnerable currency in the morning close this position in the afternoon and never face an interest cost this tactic might seem especially attractive in times of fixedrate crisis since it suggests an immunity to the central bank s interest rate defense in equilibrium however buyers of the vulnerable currency must be compensated on average with an intraday capital gain as long as no devaluation occurs that is currencies under attack should typically appreciate intraday using data on intraday exchange rate changes within the european monetary system we find this prediction is borne out this article examines implications of the fact that interest rates are zero intraday in particular we focus on the foreign exchange fx market and ask whether trading strategies might be affected the answer to this question is of greater import than might first appear for example in times of fixed rate crisis central banks typically employ an interest rate defense raising domestic rates to attract a capital inflow and punish short sellers but if dealers are immune to this defense at least on an intraday basis then perhaps the viability of fixed rate regimes is undermined goldstein et al 1993 provide an overview of how central banks defended their currencies during the 1992 currency crisis a simple example helps with intraday interest rates of zero a dealer can short a high interest rate currency in the morning close her position in the afternoon and never face an interest cost if there is any likelihood of an intraday devaluation this appears to be an attractive strategy other things equal since the dealer is immune to the interest cost of an overnight short position other things should not be equal in equilibrium however buyers of the vulnerable currency must be compensated on average with an intraday capital gain as long as no devaluation occurs that is devaluation risk is offset by systematic appreciation further the greater the probability and size of the devaluation the greater the implied appreciation thus the absence of a role

exchange rates under ems target zones an econometric investigation this study tests krugman s model on exchange rate target zones using four old ems exchange rates those of the currencies of belgium france italy and the netherlands against the deutsche mark vast theoretical literature is available but there are very few empirical studies testing the main results of krugman s model namely the honeymoon effect smooth pasting and the overall s curved relationship between fundamental and exchange rate the present study supports the honeymoon effect but does not find any evidence in support of smooth pasting or of an s curved relationship between the exchange rate and fundamentals for the belgian franc french franc and italian lira against the deutsche mark the dutch guilder very closely follows movements in the german mark throughout the period 1981 90 end of month exchange rates and euro currency interest rates data are used

stochastic devaluation risk and the empirical fit of target zone models in the model of this paper an exchange rate fluctuates between given boundaries for random lengths of time and jumps discretely when devaluation occur we provide explicit solutions for the stochastic processes followed by the exchange rate and by the expected rate of depreciation when the likelihood and the size of devaluations vary stochastically over time the model produces realistic patterns of covariation between exchange rates and interest rate differentials and provides interesting interpretations of available empirical evidence we also specify how to infer devaluation risk from target zone data

does contracting out increase the efficiency of government programs evidence from medicaid hmos state governments contract with health maintenance organizations hmos to coordinate medical care for nearly 20 million medicaid recipients identifying the causal effect of hmo enrollment on government spending and health care quality is difficult if as is often the case recipients have the option to enroll in a plan to estimate the average effect of hmo enrollment this paper exploits county level mandates introduced during the last several years in the state of california that required most medicaid recipients to enroll in a managed care plan the empirical results demonstrate that the resulting switch from fee for service to managed care was associated with a substantial increase in government spending but no corresponding improvement in infant health outcomes the findings cast doubt on the hypothesis that hmo contracting has reduced the strain on government budgets

networks in labor markets wage and employment dynamics and inequality we present a model of labor markets that accounts for the social network through which agents hear about jobs we show that both wages and employment are positively associated a strong form of correlation across time and agents we also analyze the decisions of agents regarding staying in the labor market or dropping out if there are costs to staying in the labor market then networks of agents that start with a worse wage status will have higher drop out rates and there will be a persistent differences in wages between groups according to the starting states of their networks

implied exchange rate distributions evidence from otc option markets abstract this paper uses a rich new dataset of option prices on the dollar mark dollar yen and key ems cross rates to extract the entire risk neutral probability density function pdf over horizons of 1 and 3 months we compare three alternative smoothing methods cubic splines an implied binomial tree trimmed and untrimmed and a mixture of lognormals for transforming option data into the pdf despite their methodological differences the three approaches lead to a similar pdf clearly distinct from the lognormal benchmark and typically characterized by skewness and leptokurtosis we then document a striking positive correlation between skewness in these pdfs and the spot rate the stronger a currency the more expectations are skewed towards a further appreciation of that currency we interpret this finding as a rejection that innovations in these exchange rates are independent of the level or characteristic of a credible target zone explicit or implicit instead this positive correlation is consistent with target zones with endogenous realignment risk we discuss two interpretations of our results on skewness when a currency is stronger the actual probability of further large appreciation is higher or because of risk such states are valued more highly

competition and incentives with motivated agents a unifying theme in the literature on organizations such as public bureaucracies and private nonprofits is the importance of mission as opposed to profit as an organizational goal such mission oriented organizations are frequently staffed by motivated agents who subscribe to the mission this paper studies incentives in such contexts and emphasizes the role of matching the mission preferences of principals and agents in increasing organizational efficiency matching economizes on the need for high powered incentives it can also however entrench bureaucratic conservatism and resistance to innovations the framework developed in this paper is applied to school competition incentives in the public sector and in private nonprofits and the interdependence of incentives and productivity between the private for profit sector and the mission oriented sector through occupational choice jel d23 d73 h41 l31 the late twentieth century witnessed a historic high in the march of market capitalism with unbridled optimism in the role of the profit motive in promoting welfare in the production of private goods moreover this generated a broad consensus on the optimal organization of private good production through privately owned competitive firms when it comes to the provision of collective goods no such consensus has emerged debates about the relative merits of public and private provision still dominate this paper suggests a contracting approach to the provision of collective goods it focuses on two key issues how to structure incentives and the role of competition between providers at its heart is the idea that organizations that provide collective goods cohere around a mission 2 thus production of collective goods can be viewed as mission oriented

intervention policy and mean reversion in exchange rate target zones the swedish the intervention policy of the swedish central bank is studied using daily intervention data for the late 1 980s in contrast to the first generation of target zone models we find that the interventions occur all over the exchange rate band and almost every day based on this evidence we estimate an exchange rate target zone model with intra marginal interventions the results go a long way towards explaining the well established hump shaped exchange rate distribution and lack of non linearities

inputs incentives and complementarities in education experimental evidence from tanzania we present results from a large scale randomized experiment across 350 schools in tanzania that studied the impact of providing schools with i unconditional grants ii teacher incentives based on student performance and iii both of the above after two years we find i no impact on student test scores from providing school grants ii some evidence of positive effects from teacher incentives and iii significant positive effects from providing both programs most important we find strong evidence of complementarities between the programs with the effect of joint provision being significantly greater than the sum of the individual effects our results suggest that combining spending on school inputs the default policy with improved teacher incentives could substantially increase the cost effectiveness of public spending on education

the political economy under monetary union has the euro made a difference economic and monetary union emu has transformed europe and has created an integrated pan european economy much research has focused on understanding this integration process and what benefits and costs it entails this paper identifies a political economy channel of emu as the monetary union implies that member states had to transfer or at least curtail their policy autonomy in several areas such as monetary policy and fiscal policy the paper shows that emu has helped reduce the impact of political shocks on the domestic economy of member states but magnified the transmission of political shocks within the euro area equally importantly economies with weak domestic policies and institutions exhibited a significantly higher sensitivity to domestic political shocks before emu but not thereafter while this may entail that emu has brought benefits to countries with weaker policies and institutions by insulating them from adverse political developments at home a potential drawback is that it may provide weaker market discipline for domestic political stability marcel fratzscher and livio stracca

two cases for sand in the wheels of international finance the incompatibility of pegged exchange rates international capital mobility and national monetary autonomy is a basic postulate of open economy macroeconomies in the present environment of high capital mobility and political uncertainty even the possibility that governments may utilize their policy autonomy can defeat efforts to peg the exchange rate this leaves two possibilities one is to fix the exchange rate irrevocably through monetary unification the other is to live with floating rates either way a case can be made for throwing sand in the wheels of international finance where monetary unification is not an option this is a may to make distinct national currencies tolerable and international money and capital markets compatible with modest national autonomy in monetary and macroeconomic policy for eu counties striving to create a monetary union it is the only politically and economically feasible way of completing the transition to stage iii of the maastricht process

coordination and local interaction experimental evidence abstract subjects repeatedly played a three player coordination game with a payoff dominant and a risk dominant equilibrium subjects interacting in fixed groups quickly coordinated on the payoff dominant equilibrium while those interacting with their neighbors around a circle eventually coordinated on the risk dominant equilibrium

quantitative modelling of the eur chf exchange rate during the target zone regime of september 2011 to january 2015 krugman 1991 s target zone model for exchange rate dynamics has become the reference of a large part of this literature despite its simplicity and elegance empirical evidence has been lacking not least because it is difficult to capture the predicted non linear relationship between the observable exchange rate and the non observable fundamental value this is why we propose a different approach by inverting locally the relation between exchange rate and fundamental value we derive analytical expressions for the conditional volatility and the probability density as a function of the exchange rate this allows us to examine krugman s prediction directly from historical data and furthermore enables us to test the smooth pasting condition which is intimately related to the no arbitrage condition concretely we study the performance of the euro swiss franc exchange rate in the extraordinary period from september 6 2011 to january 15 2015 when the swiss national bank enforced a minimum exchange rate of 1 20 swiss francs per euro we show that the data are well explained by the theory and conclude that krugman s target zone model holds after all but apparently only under extreme and sustained pressure that pushes continuously the exchange rate very close to the boundary of the target zone

the effects of social networks on employment and inequality we develop a model where agents obtain information about job opportunities through an explicitly modeled network of social contacts we show that employment is positively correlated across time and agents moreover unemployment exhibits duration dependence the probability of obtaining a job decreases in the length of time that an agent has been unemployed finally we examine inequality between two groups if staying in the labor market is costly and one group starts with a worse employment status then that group s drop out rate will be higher and their employment prospects will be persistently below that of the other group

double for nothing experimental evidence on an unconditional teacher salary increase in indonesia how does a large unconditional increase in salary affect the performance of incumbent employees in the public sector this paper presents experimental evidence on this question in the context of a policy change in indonesia that led to a permanent doubling of teachers base salaries the analysis uses a large scale randomized experiment across a representative sample of indonesian schools that accelerated this pay increase for teachers in treated schools the findings show that the large pay increase significantly improved teachers satisfaction with their income reduced the incidence of teachers holding outside jobs and reduced self reported financial stress nevertheless after two and three years the increase in pay led to no improvement in student learning outcomes the effects are precisely estimated making it possible to rule out even modest positive impacts on test scores the results suggest that unconditional pay increases are unlikely to be an effective policy option for improving the effort and productivity of incumbent employees in public sector settings

target zones and small realignments abstract we study the behaviour of the exchange rate in a target zone in the case where a realignment may occur at the edges of the band we show in contrast to the previous result that the stabilizing property of the target zone may remain even when the credibility is very low

experimental games on networks underpinnings of behavior and equilibrium selection in this paper we describe a series of laboratory experiments that implement specific examples of a general network structure specifically actions are either strategic substitutes or strategic complements and participants have either complete or incomplete information about the structure of a random network since economic environments typically have a considerable degree of complementarity or substitutability this framework applies to a wide variety of settings we examine behavior and equilibrium selection the degree of equilibrium play is striking in particular with incomplete information behavior closely resembles the theoretical equilibrium whenever this is unique when there are multiple equilibria general features of networks such as connectivity clustering and the degree of the players help to predict informed behavior in the lab people appear to be strongly attracted to maximizing aggregate payoffs social efficiency but there are forces that moderate this attraction 1 people seem content with in the aggregate capturing only the lion s share of the efficient profits in exchange for reduced exposure to loss and 2 uncertainty about the network structure makes it considerably more difficult to coordinate on a demanding but efficient equilibrium that is typically implemented with complete information

disruption versus tiebout improvement the costs and benefits of switching schools most students change schools at some point in their academic careers but some change very frequently and some schools experience a great deal of turnover while many argue that mobility harms students economists tend to emphasize tiebout type moves to procure better school quality sq this paper disentangles the disruption effects of moves from changes in sq importantly it identifies the negative externality movers impose on other students student turnover is shown to entail a substantial cost for movers and non movers alike this cost appears to be larger for lower income and minority students who typically attend much higher turnover schools

a structural threshold model of the exchange rate under optimal intervention abstract by considering a social trade off between targeting the exchange rate and minimizing intervention costs nonlinear exchange rate dynamics can be captured by a structural threshold model this article provides a theory based empirical exchange rate model and shows how to put the model into an empirical investigation to estimate the structural threshold model we propose a two step procedure which separately estimates the permanent and temporary fundamentals of the foreign exchange market a demonstration of our approach is applied to 1981q3 2008q3 taiwan s foreign exchange market with a brief review of its monetary policies and central bank given prior estimation results are consistent with theoretical predictions and many intervention operations of taiwan s central bank are successfully identified

systems competition and network effects this paper discusses firm behavior market performance and the public and private institutions that arise in systems markets i e markets where consumers use compatible components together to generate benefits in such markets which include communications networks and hardware software networks popular products are inherently more valuable these network effects can drive corporate strategies and are critical in understanding innovation in many high technology markets the discussion here emphasizes the dynamics of consumer adoption decisions in the presence of network effects competition between incompatible systems and how suppliers choose which components are compatible and which are not

the foreign exchange risk premium in a target zone with devaluation risk abstract the foreign exchange risk premium in an exchange rate target zone is derived when the exchange rate is heteroskedastic within the band and there is a separate devaluation risk the risk premium is then the sum of two separate risk premia arising from uncertainty about exchange rate movements within the band and from uncertainty about devaluations both real and nominal risk premia are considered real and nominal risk premia from movements within the band are very small real and nominal risk premia from devaluations are larger but still relatively small proportions of the interest rate differential

target zones and forward rates in a model with repeated realignments abstract this paper studies the term structure of forward premia in a target zone with imperfect credibility the relationship between spot and forward exchange rates which reflects the possibility of realignments of the band is studied for various intervention policies with different degrees of credibility forward market data is used to estimate the implied credibility of the french german target zone during the ems parameter estimates accord with the experience of the ff dm exchange rate during the 1980s although spot exchange rates display little sensitivity to anticipated intervention forward data can be used to detect the effects of intervention on exchange rate dynamics

network effects on strategic interactions a laboratory approach abstract we examine the effect of interaction structure network on two classes of collective activities herding and shirking respectively referring to the situation where a player s incentive to take a certain action increases and decreases if more of her network neighbors follow the same action in our experiment we find that subjects do not act according to theoretical equilibrium and their frequencies of making the socially beneficial choice in herding and shirking games are inversely influenced by the number of network neighbors they have moreover the observed local network effect is stronger in shirking games while the global network effect is more significantly present in herding games we explain the behavioral regularities through a hybrid learning model which extends sewa learning into a network context as such our learning model provides a foundation for the observed dynamics disequilibrium behavior as well as the local and global network effects

car mechanics in the lab investigating the behavior of real experts on experimental markets for credence goods credence goods such as car repairs or medical services are characterized by severe informational asymmetries between sellers and consumers leading to fraud in the form of provision of insufficient service undertreatment provision of unnecessary service overtreatment and charging too much for a given service overcharging recent experimental research involving a standard student subject pool has examined the influence of informational and market conditions on the type and level of fraud we investigate whether professional car mechanics as real sellers of credence goods react in the same way to changes in informational and institutional constraints while we find qualitatively similar effects in the fraud dimensions of undertreatment and overcharging for both subject pools car mechanics are significantly more prone to supplying unnecessary services in all conditions which could be a result of decision heuristics they learned in their professional training