an economic theory of self control the concept of self control is incorporated in a theory of individual intertemporal choice by modeling the individual as an organization the individual at a point in time is assumed to be both a farsighted planner and a myopic doer the resulting conflict is seen to be fundamentally similar to the agency conflict between the owners and managers of a firm both individuals and firms use the same techniques to mitigate the problems which the conflicts create this paper stresses the implications of this agency model and discusses as applications the effect of pensions on saving saving and the timing of income flows and individual discount rates

banking for the poor evidence from india state led credit and savings programs have been implemented in numerous low income countries but their success in reaching the poor remains widely debated we report on research which exploits the policy features of the indian social banking program to provide evidence on this issue state led branch expansion into rural unbanked locations reduced poverty across indian states in addition the enforcement of directed bank lending requirements was associated with increased bank borrowing among the poor in particular low caste and tribal groups

are any growth theories robust this article investigates the strength of empirical evidence for various growth theories when there is model uncertainty with respect to the correct growth model using model averaging methods we find little evidence that so called fundamental growth theories play an important role in explaining aggregate growth in contrast we find strong evidence for macroeconomic policy effects and a role for unexplained regional heterogeneity as well as some evidence of parameter heterogeneity in the aggregate production function we conclude that the ability of cross country growth regressions to adjudicate the relative importance of alternative growth theories is limited despite the vast amount of empirical research generated by new growth theories there is remarkably little consensus on which mechanisms are most salient in explaining cross country differences this article is designed to provide some evidence on this question by examining the robustness of empirical support for different growth the ories as determinants of both aggregate growth and its underlying components total factor productivity tfp growth and physical and human capital accumulation one reason for the lack of empirical consensus on growth determinants is that the main statistical tool in empirical studies cross country growth regressions provides very different answers depending on how the regression is specified which for this context typically amounts to the choice of control variables individual papers typically employ regressions that include modest subsets of the body of regressors that have been pro posed in the literature as a whole others employ a kitchen sink approach to evaluate the relative evidentiary support of competing growth theories in such an exercise a large number of variables are included in a regression and those variables that prove to be significant are then declared to be the important determinants of growth while the others are dismissed as unimportant rodrik et al 2002 sachs 2003

growth forecasts belief manipulation and capital markets abstract we analyze how a benevolent privately informed government agency would optimally release information about the economy s growth rate when the agents hold heterogeneous beliefs we model two types of agent conforming and dissenting the former has a prior that is identical to that of the government agency whereas the latter has a prior that differs from that of the government agency we identify both informative and uninformative equilibria informative equilibria are equilibria in which the government agency s equilibrium signal leads to a revision of beliefs we demonstrate that the uninformative equilibria can in fact dominate the informative ones in terms of ex post social welfare

a search cost model of obfuscation this article develops models in which obfuscation is individually rational for oligopolistic firms firms sell a homogeneous good to rational consumers who incur search costs to learn prices search costs are endogenized by allowing obfuscation firms have an unobservable action that increases the time needed to learn their price one model involves search costs convex in shopping time we show that slight convexity can dramatically alter the equilibrium price distribution a second model examines an informational linkage between current and future search costs consumers are uncertain about a component of search costs here a signal jamming mechanism can lead to equilibrium obfuscation

simple market equilibria with rationally inattentive consumers we study a market with rationally inattentive consumers who are unsure of the terms of the offers made by firms but can acquire information about the terms at a cost in a symmetric equilibrium the price set by firms is continuously increasing in the cost of information for consumers and decreasing in the number of firms operating in addition favorable a priori information about a firm leads it to set a higher price and a new entrant can increase demand for incumbents when consumers have heterogeneous costs of information firms selling low quality products may choose to set the highest prices

financial inclusion and poverty a tale of forty five thousand households abstractusing a new nationally representative survey data covering approximately 45 000 indian households we examine the effects of financial inclusion on poverty we construct a multidimensional

the economics of poverty traps and persistent poverty an asset based approach abstract longitudinal data on household living standards open the way to a deeper analysis of the nature and extent of poverty while a number of studies have exploited this type of data to distinguish transitory from more chronic forms of income or expenditure poverty this paper develops an asset based approach to poverty analysis that makes it possible to distinguish deep rooted persistent structural poverty from poverty that passes naturally with time due to systemic growth processes drawing on the economic theory of poverty traps and bifurcated accumulation strategies this paper briefly discusses some feasible estimation strategies for empirically identifying poverty traps and long term persistent structural poverty as well as relevant extensions of the popular foster greer thorbecke class of poverty measures the paper closes with reflections on how asset based poverty can be used to underwrite the design of persistent poverty reduction strategies

finance and income inequality in kazakhstan evidence since transition with policy suggestions abstractkazakhstan gained independence in 1990 and has undergone significant changes in economic social and trade conditions since then we analyse the effects of financial development on income inequality in kazakhstan incorporating economic growth foreign investment education and the role of democracy as the drivers we establish that income inequality in kazakhstan is impaired by financial development in summary we send three messages for policy purposes first strengthening financial sector is necessary to close the gap between haves and have nots second attracting fdi beyond the hydrocarbon sector is necessary to alleviate inequality finally adaptation of education system to the new social and economic environment would help in improving income distribution

finance firm size and growth the authors examine whether financial development boosts the growth of small firms more than large firms and hence provides information on the mechanisms through which financial development fosters aggregate economic growth they define an industry s technological firm size as the firm size implied by industrial specific production technologies including capital intensities and scale economies using cross industry cross country data the results indicate that financial development exerts a disproportionately large effect on the growth of industries that are technologically more dependent on small firms this suggests that financial development accelerates economic growth by removing growth constraints on small firms and also implies that financial development has sectoral as well as aggregate growth ramifications

a quantitative comparison of sticky price and sticky information models of price setting i estimate sticky price and sticky information models of price setting for the united states via maximum likelihood techniques reaching several conclusions first the sticky price model fits best and captures inflation dynamics as well as reduced form equations once hybrid behavior is allowed second the importance of hybrid behavior in sticky price models is potentially consistent with a role for some information imperfections such as sticky information as a complement to nominal price rigidities finally the favorable results herein for the hybrid sticky price model when evaluated by statistics that summarize the relative fit of different models is consistent with the existing literature that is both supportive and dismissive of such models as this literature has largely ignored fit in evaluating such models many previous studies have focused on ancillary issues such as the standard errors associated with certain parameters or granger causality tests that may not provide much information about sticky price models

the contribution of female health to economic development we analyze the economic consequences for less developed countries of investing in female health we do this through developing and calibrating a novel micro founded dynamic general equilibrium model in which parents trade off the number of children against investments in their education and in which we allow for health related gender differences in productivity we show that better female health speeds up the demographic transition and thereby the take off toward sustained economic growth by contrast male health improvements delay the transition and take off because ceteris paribus they raise fertility investing in female health is therefore a potent lever for promoting development

the achilles heel of salience theory and a way to fix it abstract salience theory has been successfully used to explain a wide range of empirical and experimental phenomena such as the allais paradox framing effect the preference reversal phenomenon or the decoy and compromise effects in this paper we show that salience theory carries a notable flaw and under certain circumstances it suggests that a salient thinker may prefer a dominated option even when a strictly dominant alternative is available to her to solve this problem we propose a possible alteration of the theory and show how it accounts for the same phenomena as the salience theory

financial development bank ownership and growth or does quantity imply quality abstract in 1980 india nationalized its large private banks this induced different bank ownership patterns across different towns allowing credible identification of the effects of bank ownership on financial development lending rates and the quality of intermediation as well as employment and investment credit markets with nationalized banks experienced faster credit growth during a period of financial repression nationalization led to lower interest rates and lower quality intermediation and may have slowed employment gains in trade and services development lending goals were met but these had no impact on the real economy

what constrains financial inclusion for women evidence from indian micro data summary the role and relevance of gender in financial inclusion has been an evolving area of research in recent times although there are several cross country studies on this aspect few within country studies have addressed this issue in a comprehensive manner in this context exploiting disaggregated household level data for india we analyze the interface between gender and finance more specifically we examine whether gender matters for financial inclusion and if so what are the possible factors that influence this relationship our findings suggest significant disparity in both the access to as well as the use of finance by gender on average female headed households are 8 less likely to access formal finance and 6 more likely to access informal finance as compared to households that are headed by males after taking into account other relevant household and state level characteristics that are important in explaining financial access by households similar evidence carries over to the use of finance households headed by female use 20 less cash loans as compared to male headed households subsequently we investigate the possible channels which impede financial inclusion for female headed households our analysis highlights that for female headed households education and wages are more relevant in explaining the access to finance whereas political and social factors are much more germane in explaining the use of finance

finance and income inequality what do the data tell us although there are distinct conjectures about the relationship between finance and income inequality little empirical research compares their explanatory power we examine the relationship between finance and income inequality for 83 countries between 1960 and 1995 because financial develop ment might be endogenous we use instruments from the literature on law finance and growth to control for this our results suggest that in the long run inequality is less when financial development is greater consistent with galor and zeira 1993 and banerjee and newman 1993 although the results also suggest that inequality might increase as financial sector development increases at very low levels of financial sector development as suggested by greenwood and jovanovic 1990 this result is not robust we reject the hypothesis that financial development benefits only the rich our results thus suggest that in addition to improving growth financial development also reduces inequality

frictions or mental gaps what s behind the information we don t use and when do we care consumers suffer significant losses from not acting on available information these losses stem from frictions such as search costs switching costs and rational inattention as well as what we call mental gaps resulting from wrong priors worldviews or relevant features of a problem not being top of mind most research studying such losses does not empirically distinguish between these mechanisms instead we show that most highly cited papers in this area presume one mechanism underlies consumer choices and assume away other potential explanations or collapse many mechanisms together we discuss the empirical difficulties that arise in distinguishing between different mechanisms and some promising approaches for making progress in doing so we also assess when it is more or less important for researchers to distinguish between these mechanisms approaches that seek to identify true value from demand without specifying mechanisms behind this wedge are most useful when researchers are interested in evaluating allocation policies that strongly steer consumers towards better options with regulation traditional policy instruments and defaults on the other hand understanding the precise mechanisms underlying consumer losses is essential to predicting the impact of mechanism policies aimed primarily at reducing specific frictions or mental gaps without otherwise steering consumers we make the case that papers engaging with these questions empirically should be clear about whether their analyses distinguish between mechanisms behind poorly informed choices and what that implies for the questions they can answer we present examples from several empirical contexts to highlight these distinctions

choosing between time and state dependence micro evidence on firms price reviewing strategies because of recent findings based on survey data it is now well known that firms differ from each other with respect to their price reviewing strategies while some firms review their prices at fixed intervals of time others prefer to perform price revisions in response to changes in economic conditions some theories have been suggested to explain this however empirical evidence on the relative importance of the factors that determine the different strategies of firms is virtually non existent in this paper we help to fill this gap by investigating the factors that explain why firms follow time dependent state dependent or both time and state dependent price reviewing rules we find that the strategies of firms vary with firm characteristics that have a bearing on the importance of information costs with the variability of the optimal price and with the sensitivity of profits to non optimal prices

ethnic diversity and poverty we examine the relationship between ethnic diversity and poverty for a cross sectional sample of developing countries we measure diversity using indices of ethnic and linguistic fractionalization and measure poverty using the multidimensional poverty index mpi multidimensional poverty headcount mph intensity of deprivation poverty gap and poverty headcount ratio we find that ethnic and linguistic fractionalization contributes to poverty levels specifically after controlling for endogeneity we find that a standard deviation increase in ethnic fractionalization is associated with a 0 32 0 44 and 0 53 standard deviation increase in the mpi mph and the intensity of deprivation respectively moreover a standard deviation increase in ethnic fractionalization is associated with between a 0 34 and 0 63 standard deviation increase in the population living below 1 90 and 3 10 the poverty gap at 1 90 and 3 10 a day and the headcount ratio at 1 90 and 3 10 a day similar results are also observed for linguistic fractionalization with standardized coefficients between 0 53 and 0 93 we find that our results are robust to alternative ways to measure poverty and ethnic diversity including ethnic polarization as well as alternative approaches to address endogeneity

competition for attention we present a model of market competition in which consumers attention is drawn to the products most salient attributes firms compete for consumer attention via their choices of quality and price strategic positioning of a product affects how all other products are perceived with this attention externality depending on the cost of producing quality some markets exhibit commoditized price salient equilibria while others exhibit de commoditized quality salient equilibria when the costs of quality change innovation can lead to radical shifts in markets as in the case of decommoditization of the coffee market by starbucks in the context of financial innovation the model generates the phenomenon of reaching for yield

the impact of formal finance on the rural economy of india india has systematically pursued a supply led approach to increasing agricultural credit its objectives have been to replace moneylenders to relieve farmers of indebtedness and to achieve higher levels of agricultural credit investment and output india s success in replacing moneylenders has been outstanding between 1951 and 1971 their share of rural credit appears to have dropped from more than 80 percent to 36 percent it may have dropped to as low as 16 percent by 1981 but that estimate is disputed still institutional credit is far from reaching all farmers only about a quarter of cultivators borrow and no more than 2 percent take out long term loans most small farmers have little access to credit and long term credit goes mostly to large farmers overall farm debt has probably not increased sharply in real terms as formal credit has primarily substituted for credit from other sources moreover with the rapid growth of commercial banks in the 1970s the system mobilized more deposits than it lent in rural areas in 1981 of course enhanced deposit services are a useful service of the rural population but one must ask what has been the impact of heavy rural credit and better financial services on agricultural investment production and rural incomes the authors econometric results suggest that the rapid expansion of commercial banks in rural areas has had a substantially positive effect on rural nonfarm employment and output the availability of better banking facilities appears to have overcome one of the obstacles to locating nonfarm activities in rural areas expanded rural finance has had less of an effect on output and employment in agriculture than in the nonfarm sector the effect on crop output has not been great despite the fact that credit to agricluture has greatly increased the use of fertilizer and private investment in machines and livestock there has been more impact on inputs than on output so the additional capital investment has been more important in substituting for agriclutural labor than in increasing crop output but overall rural credit and expansion of the rural financial system have had a positive effect on rural wages creating nonfarm jobs has apparently added more to total employment than the substitution of capital for labor has subtracted it in agriculture so wages have risen even for agricultural workers albeit modestly the supply led approach to agricultural credit that has been pursued for three decades has clearly benefited current borrowers and farm households formerly indebted to moneylenders it has also spurred fertilizer use and investment in agriculture it has been less successful in generating viable institutions and has failed to generate agricultural employment the policy s costs to india s government have been high as portfolio losses associated with poor repayment ultimately have to be borne by the government or one of its institutions under optimistic assumptions the benefits of the agricultural income are at best no more than 13 percent higher than the cost to the government of the extra agricultural credit if assumptions about the cost of supplying the credit and about repayment rates are less optimistic the social costs and the costs to the government of providing the credit would have exceeded the benefits in agricultural income the expansion of commercial banks to rural areas paid off in nonfarm growth employment and rural wages the question is could these benefits have been achieved without imposing agricultural credit targets on the commercial banks and credit cooperatives or did the commercial banks expand only because they were forced to lend to agriculture the authors could not answer these questions with the data at hand

accounting for the effect of health on cross state income inequality in india abstract we perform development accounting in accordance with weil 2005 weil 2007 in a cross state analysis of india results of similar magnitude are found demonstrating that health can account for 1 to 18 of income differences depending on the health measure

foundations for optimal inattention abstract this paper models an agent who has a limited capacity to pay attention to information and thus conditions her actions on a coarsening of the available information an optimally inattentive agent chooses both her coarsening and her actions by maximization of an underlying subjective expected utility preference relation net of a cognitive cost of attention the main result axiomatically characterizes the conditional choices of actions by an agent that are necessary and sufficient for her behavior to be seen as if it is the result of optimal inattention observing these choices permits unique identification of the agent s utility index the information to which she pays attention her attention cost and her prior whenever information is costly

the legal environment banks and long run economic growth this paper examines the relationship between the legal system and banlding development and traces this connection through to long run rates of per capita gdp growth capital stock growth and productivity growth the data indicate that countries where the legal system 1 emphasizes creditor rights and 2 rigorously enforces contracts have better developed banks than countries where laws do not give a high priority to creditors and where enforcement is lax furtherrnore the exogenous component of banking development the component defined by the legal environment is positively and robustly associated with per capita growth physical capital accumulation and productivity growth this paper addresses two questions first do crosscountry differences in the legal rights of creditors the efficiency of contract enforcement and the origin of the legal system explain cross country differences in the level of banking development second do better developed banks cause faster economic development that is is the component of banking development defined by the legal environment positively associated with long run rates of economic growth capital accumulation and productivity growth examining the relationship between the legal system and banking development is valuable irrespective of issues associated with long run growth first banks may influence the level of income per capita and the magnitude of cyclical fluctuations bernanke and gertler 1989 1990 second many economists stress that understanding the evolution of legal and financial systems is essential for understanding economic development north 1981 engerman and sokoloff 1996 consequently quantitative information on the relationship between the legal environment and banks will improve our understanding of business cycles and the process of economic development furthermore examining the causal links between banks and economic growth has both conceptual and policy implications on the conceptual front a long literature debates the importance of banks in economic development starting as early as bagehot 1873 economists have argued that better banks banks that are better at identifying creditworthy firms mobilizing savings pooling risks and facilitating transactions

financial inclusion gender dimension and economic impact on poor households summary we examine the question in the context of gender dimension what is the evidence of the impact of the financial inclusion programs on poor households represented by women relative to that represented by men by constructing a good counterfactual and comparison group we employ the difference in difference estimator approach with panel least squares and generalized methods of moments using standard errors for a robust analysis we notice that income growth cagr net of inflation effect was 8 40 for women as against 3 97 for men indicating that the gender of participating poor undoubtedly affects the outcomes of these programs

finance and inequality the case of india although theory emphasizes the role of financial market frictions in explaining income inequality there is little empirical research exploring how financial development and financial sector reforms influence the evolution of income inequality this article examines how finance impacts income inequality in india using annual time series data for over half a century the results indicate that while financial development helps reduce income inequality financial liberalization seems to exacerbate it the results are robust to the use of different measures for financial development and financial liberalization although the relationship between financial development and economic growth has been extensively studied in the literature see for example king and levine 1993 demetriades and hussein 1996 arestis and demetriades 1997 levine loayza and beck 2000 bell and rousseau 2001 ang and mckibbin 2007 little is known about how finance impacts income inequality the importance of the finance inequality relationship has recently been highlighted in an insightful survey article by claessens and perotti 2007 they indicate that while financial development can help reduce income inequality financial liberalization captured by established interests may do the opposite the theoretical predictions of the effects of finance on income inequality are controversial rajan and zingales 2003b argue that improvements in the formal financial sector primarily benefit the rich greenwood and jovanovic 1990 predict a nonlinear relationship between financial development and income inequality where it is hypothesized that income inequality first increases with the degree of sophistication in the financial systems then stabilizes and eventually declines others propose that the presence of financial market imperfections deters the poor from borrowing adequately to invest in human and physical capital implying that financial development helps alleviate income inequality banerjee and newman 1993 galor and zeira 1993 aghion and bolton 1997 mookherjee and ray 2003 2006 given that theories provide ambiguous predictions regarding the effects of finance on the distribution of income it is useful to approach the issue at the empirical level this could facilitate our understanding of the relationship between finance and inequality and help us to assess the validity of each theoretical model despite the important role of financial market frictions in the theories of poverty and income inequality researchers so far have not adequately addressed whether financial

access to finance an unfinished agenda recent data compilations show that many poor and non poor people in many developing countries face a high degree of financial exclusion and high barriers in access to finance theory and empirical evidence point to the critical role that improved access to finance has in promoting growth and reducing income inequality an extensive literature shows the channels through which finance promotes enterprise growth and improves aggregate resource allocation there is less evidence at the household level however and on the effectiveness of policies to overcome financial exclusion the article summarizes recent efforts to measure and analyze the impact of access to finance and discusses the unfinished research agenda

the real impact of improved access to finance evidence from mexico this paper provides new evidence on the impact of access to finance on poverty it highlights an important channel through which access affects poverty the labor market the paper exploits the opening of banco azteca in mexico a unique natural experiment in which over 800 bank branches opened almost simultaneously in preexisting elektra stores importantly the bank has focused on previously underserved low income clients our key finding is a sizeable effect of access to finance on labor market activity and income levels especially among low income individuals and those located in areas with lower preexisting bank penetration

post independence india a case of finance led industrialization abstract this paper examines whether financial intermediaries have played a leading role in influencing india s economic performance after describing the evolution and functions of the financial sector we construct a set of vector autoregressive var and vector error correction models vecm to evaluate the strength and direction of the links between measures of formal intermediation and various economic aggregates the results suggest that i the financial sector was instrumental in promoting aggregate investment and output but also in the steady shift toward industry that has characterized india s development ii the operative channel was one of debt accumulation rather than improvements in total factor productivity and iii its contributions went beyond the passive support of fiscal policy

does financial development contribute to poverty reduction the article examines the contribution of financial development to poverty reduction in developing countries building on earlier research which has established links between financial development and economic growth and between economic growth and poverty reduction the article tests for a causal process linking financial sector growth and poverty reduction the empirical results indicate that up to a threshold level of economic development financial sector growth contributes to poverty reduction through the growth enhancing effect the impact of financial development on poverty reduction will be affected however by any change in income inequality resulting from financial development

setting the right prices for the wrong reasons we consider a model of nominal price adjustment with firm specific and aggregate shocks to economic fundamentals and incomplete dispersed information firms update their expectations about fundamentals based on their own cash flows revenues and wages we show that in a model with realistic levels of product level price dispersion the firms inference about aggregate shocks is very gradual yet in the aggregate prices adjust rapidly in response to aggregate nominal shocks when an aggregate shock occurs firms mistakenly attribute it to firm specific shocks but adjust prices nevertheless since the exact nature of the shock matters little for its optimal pricing decision

rigid pricing and rationally inattentive consumer abstract this paper proposes a mechanism leading to rigid pricing as an optimal strategy it applies a framework of rational inattention to study the pricing strategies of a monopolistic seller facing a consumer with limited information capacity the consumer needs to process information about the realized price while the seller is perfectly attentive the seller chooses to price rigidly i e prices respond to changes in the unit input cost less than if the consumer was perfectly attentive the rigidity is sometimes manifested by discreteness of prices the seller charges a finite set of different prices even for a continuous range of unit input costs the seller does so to provide the consumer with easily observable prices which stimulates her to consume more and increases the seller s profit

the effect of population health on foreign direct investment inflows to low and middle income countries this paper investigates the effect of population health on gross inflows of foreign direct investment fdi we conduct a panel data analysis of 74 industrialized and developing countries over 1980 2000 our main finding is that gross inflows of fdi are strongly and positively influenced by population health in low and middle income countries our estimates suggest that raising life expectancy by one year increases gross fdi inflows by 9 after controlling for other relevant variables these findings are consistent with the view that health is an integral component of human capital for developing countries

does access to formal finance matter for welfare and inequality micro level evidence from nigeria using a treatment effects model decomposition techniques and representative household data from nigeria we study the welfare and inequality implications of access to formal finance while improving household welfare formal access to finance increases inter household inequalities despite ameliorating the inequality enhancing effect of urban residence and enhancing the inequality ameliorating effect of greater educational attainment the positive effect of access to formal finance on inequality is smaller than the effect of unobserved household characteristics indicating that welfare and equality enhancing strategies should follow a holistic approach as opposed to one focusing on one isolated policy variable at a time

were there regime switches in u s monetary policy working paper 2004 14 june 2004 abstract a multivariate model identifying monetary policy and allowing for simultaneity and regime switching in coefficients and variances is confronted with u s data since 1959 the best fit is with a model that allows time variation in structural disturbance variances only among models that also allow for changes in equation coefficients the best fit is for a model that allows coefficients to change only in the monetary policy rule that model allows switching among three main regimes and one rarely and briefly occurring regime the three main regimes correspond roughly to periods when most observers believe that monetary policy actually differed and the differences in policy behavior are substantively interesting though statistically ill determined the estimates imply monetary targeting was central in the early 80s but was also important sporadically in the 70s the changes in regime were essential neither to the rise in inflation in the 70s nor to its decline in the 80s jel classification e52 e47 c53 key words counterfactuals lucas critique policy rule monetary targeting simultaneity volatility model comparison i the debate over monetary policy change in an influential paper clarida gali and gertler 2000 cgg presented evidence that us monetary policy changed between the 1970 s and the 1980 s indeed that in the 70 s it was drastically worse they found that the policy rule apparently followed in the 70 s was one that when embedded in most stochastic general equilibrium models would imply non uniqueness of the equilibrium and hence vulnerability of the economy to sunspot fluctuations of arbitrarily large size their estimated policy rule for the later period on the other hand eliminated this indeterminacy these results are a possible explanation of the volatile and rising inflation of the 70 s and of its subsequent decline the cgg analysis has two important weaknesses one is that it fails to account for stochastic volatility us macroeconomic variables and particularly the federal funds rate have gone through periods of tranquility and of agitation with forecast error variances varying greatly from period to period ignoring such variation does not lead to inconsistent estimates of model parameters when the forecasting equations themselves are constant but it strongly biases toward a finding of changed parameters tests of the stability of the forecasting equations the other weakness is that the cgg analysis rests on powerful and implausible identifying assumptions they require that we accept that the response of the monetary authority to expected future inflation and output does not depend on the recent history of inflation money growth or output it is hard to understand why this should be so especially in the 70 s when monetarism was a prominent theme in policy debates congress was requiring reports from the fed of projected time paths of monetary aggregates and financial markets were reacting sensitively to weekly money supply numbers the requirement for existence and uniqueness of equilibrium in dynamic models is that the monetary policy rule show a more than unit response of interest rates to the sum of the logs of all nominal variables that appear on the right hand side of the reaction function if we force a particular measure of expected future inflation to proxy for all the nominal variables that actually appear independently in the reaction function we are bound to get distorted conclusions on the one hand because expected future inflation will be a noisy measure of the full set of nominal influences on policy we might get downward bias in our estimates from the usual errorsin variables effect on the other hand to the extent that expected future inflation like most expected future values shows less variation than current nominal variables we could find a mistaken scaling up of coefficients

rationalizability learning and equilibrium in games with strategic complementarities we study a rich class of noncooperative games that includes models of oligopoly competition macroeconomic coordination failures arms races bank runs technology adoption and diffusion r d competition pretrial bargaining coordination in teams and many others for all these games the sets of pure strategy nash equilibria correlated equilibria and rationalizable strategies have identical bounds also for a class of models of dynamic adaptive choice behavior that encompasses both best response dynamics and bayesian learning the players choices lie eventually within the same bounds these bounds are shown to vary monotonically with certain exogenous parameters we study the class of noncooperative supermodular games introduced by topkis 1979 and further analyzed by vives 1985 1989 who also pointed out the importance of these games in industrial economics supermodular games are games in which each player s strategy set is partially ordered the marginal returns to increasing one s strategy rise with increases in the competitors strategies so that the game exhibits strategic complementarity 2 and if a player s strategies are multidimensional marginal returns to any one com ponent of the player s strategy rise with increases in the other components this class turns out to encompass many of the most important economic applications of noncooperative game theory in macroeconomics diamond s 1982 search model and bryant s 1983 1984 rational expectations models can be represented as supermodular games in each of these models more activity by some members of the economy raises the returns to increased levels of activity by others in oligopoly theory some models of bertrand oligopoly with differentiated products qualify as supermodu lar games in these games when a firm s competitors raise their prices the marginal profitability of the firm s own price increase rises a similar structure is present in games of new technology adoption such as those of dybvig and spatt 1983 farrell and saloner 1986 and katz and shapiro 1986 when more users hook into a communication system or more manufacturers adopt an interface standard the marginal return to others of doing the same often rises similarly in some specifications of the bank runs model introduced by diamond and dybvig 1983 when more depositors withdraw their funds from a bank it is more worthwhile for other depositors to do the same in the warrant exercise

logit ces and rational inattention abstract we study the fundamental links between two popular approaches to consumer choice the multinomial logit model of individual discrete choice and the ces utility function which describes a diversified choice of a representative consumer we base our analysis on the rational inattention ri model and show that the demand system of ri agents each of which chooses a single option coincides with the demand system of a fictitious representative agent with ces utility function thus the diversified choice of the representative agent may be explained by the heterogeneity in signals received by the ri agents we obtain a new interpretation for the elasticity of substitution and the weighting coefficients of the ces utility function specifically we provide a correspondence between parameters of the ces utility function prior knowledge and marginal cost of information

optimal sticky prices under rational inattention this paper presents a model in which price setting firms decide what to pay attention to subject to a constraint on information flow when idiosyncratic conditions are more variable or more important than aggregate conditions firms pay more attention to idiosyncratic conditions than to aggregate conditions when we calibrate the model to match the large average absolute size of price changes observed in micro data prices react fast and by large amounts to idiosyncratic shocks but only slowly and by small amounts to nominal shocks nominal shocks have strong and persistent real effects we use the model to investigate how the optimal allocation of attention and the dynamics of prices depend on the firms environment jel e 3 e5 d8

how much of cross country income variation is explained by health we use development accounting techniques to assess the contribution of health to differences in income per capita among countries rather than rely on regressions in aggregate data we build up estimates of the effect of health starting from microeconomic data we examine both a particular condition anemia and a proxy for general health the adult survival rate we find that differences in anemia explain 1 3 percent of the log variance of income per capita and that differences in adult survival explain 19 percent of the log variance of income per capita the latter figure is almost one third of the variation in output that is left unexplained by other in this paper we examine quantitatively the effect of health on income per capita as well as the contribution of health to differences in income among countries understanding the effect of health on income is important for two reasons first if health does have a large effect on income per capita then this would be an important additional benefit of health improvement beyond the direct effect on the quality of life that should be taken into account when tallying up the costs and benefits of health interventions in developing countries second for economists trying to understand differences in income per capita among countries a proper accounting of the role of health is essential both for telling the complete story of economic growth and for evaluating the role of other factors that affect income specifically accounting for health differences will reduce the size of the unexplained residual variance in income among countries that is currently attributed to productivity in this paper we examine both a single condition anemia and a measure of overall health the adult survival rate figure 1 shows the relationship between income per capita and our two health measures both measures are strongly correlated with income but using this data to infer the effect of health on economic outcomes presents two problems first health is itself endogenous

do rural banks matter evidence from the indian social banking experiment lack of access to finance is often cited as a key reason why poor people remain poor this paper uses data on the indian rural branch expansion program to provide empirial evidence on this issue between 1977 and 1990 the indian central bank mandated that a commercial bank can open a branch in a location with one or more bank branches only if it opens four in locations with no bank branches we show that between 1977 and 1990 this rule caused banks to open relatively more rural branches in indian states with lower initial financial development the reverse is true outside this period we exploit this fact to identify the impact of opening a rural bank on poverty and output our estimates suggest that the indian rural branch expansion program significantly lowered rural poverty and increased non agricultural output

implications of rational inattention abstract a constraint that actions can depend on observations only through a communication channel with finite shannon capacity is shown to be able to play a role very similar to that of a signal extraction problem or an adjustment cost in standard control problems the resulting theory looks enough like familiar dynamic rational expectations theories to suggest that it might be useful and practical while the implications for policy are different enough to be interesting

small and medium size enterprises access to finance as a growth constraint abstract this paper presents recent research on access to finance by small and medium size enterprises smes smes form a large part of private sector in many developed and developing countries while cross country research sheds doubt on a causal link between smes and economic development there is substantial evidence that small firms face larger growth constraints and have less access to formal sources of external finance potentially explaining the lack of smes contribution to growth financial and institutional development helps alleviate smes growth constraints and increase their access to external finance and thus levels the playing field between firms of different sizes specific financing tools such as leasing and factoring can be useful in facilitating greater access to finance even in the absence of well developed institutions as can systems of credit information sharing and a more competitive banking structure

strategic pricing with rational inattention to quality this paper studies both theoretically and experimentally the pricing strategy of a rm that faces a consumer who is rationally inattentive to product quality sims 2003 in a standard sequential pricing game rational inattention to quality produces two types of mixed strategy perfect bayesian equilibria one where sellers pool at a low price and buyers are fully inattentive to quality and one where there is semi pooling at a high price and buyers are selectively attentive to quality i characterize these

hiv testing subjective beliefs and economic behavior this paper examines the effects of learning hiv status on economic behavior among rural malawians according to economic life cycle models if learning hiv results is informative about additional years of life being diagnosed hiv positive or negative should predict changes in consumption investment and savings behavior with important micro and macro economic implications using an experiment that randomly assigned incentives to learn hiv results i find that while learning hiv results had short term effects on subjective belief of hiv infection these differences did not persist after two years consistent with this there were relatively few differences two years later in savings income expenditures and employment between those who learned and did not learn their status

attention discrimination theory and field experiments with monitoring information acquisition we link two important ideas attention is scarce and lack of information about an individual drives discrimination in selection decisions our model of allocation of costly attention implies that applicants from negatively stereotyped groups face attention discrimination less attention in highly selective cherry picking markets where more attention helps applicants and more attention in lemon dropping markets where it harms them to test the prediction we integrate tools to monitor information acquisition into correspondence field experiments in both countries we study we find that unfavorable signals minority names or unemployment systematically reduce employers efforts to inspect resumes also consistent with the model in the rental housing market which is much less selective than labor markets we find landlords acquire more information about minority relative to majority applicants we discuss implications of endogenous attention for magnitude and persistence of discrimination in selection decisions returns to human capital and potentially for policy