does peer monitoring influence choices between cash and food findings from a field experiment to explore whether choices for transfers are influenced by peer monitoring we examine private versus public choices among monetarily equivalent values of cash and food in northern kenya many northern kenyan communities face high levels of chronic food insecurity and are tightly knit often sharing food aid transfers yet humanitarian cash transfers are relatively new to the area whether cash will be subject to the same sharing norms is not well understood utilizing a randomized block experiment we find that assigning a respondent to choose in front of peers decreases the likelihood of choosing a cash transfer relative to at least some food we argue that peer monitoring decreases the value of cash relative to food in two inter related ways choosing food in public first provides an opportunity for respondents to publicly demonstrate a commitment to local food aid sharing norms second choosing cash in public may be riskier since cash does not yet have established sharing norms a critical implication is that transfer choices and retargeting of resources within the community can be influenced by use of public or private discussions when eliciting community views especially in communities where sharing is a salient social norm

responding to food insecurity employing the market information and food insecurity response analysis framework in rural northern kenya abstract aid agencies are increasingly advocating for cash transfers as a substitute or complement to food transfers when responding to both emergency and chronic food insecurity yet cash is not always optimal in this article we demonstrate how a newly developed response analysis tool the marketing information and food insecurity response analysis mifira framework can guide evidence based identification of appropriate transfers we present findings from a mifira analysis in marsabit a remote and generally food insecure district of northern kenya as a demonstration of the analytical versatility of mifira we utilise a variety of data ranging from rigorously collected household data to market surveys and rapid assessments in focus groups as a proof of concept this article shows how mifira can be effectively deployed in other regions facing chronic or emergency food insecurity to help response agencies make systematic decisions on a solid evidence base

selection investment and women s relative wages over time in theory growing wage inequality within gender should cause women to invest more in their market productivity and should differentially pull able women into the workforce our paper uses heckman s two step estimator and identification at infinity on repeated current population survey cross sections to calculate relative wage series for women since 1970 that hold constant the composition of skills we find that selection into the female full time full year workforce shifted from negative in the 1970s to positive in the 1990s and that the majority of the apparent narrowing of the gender wage gap reflects changes in female workforce composition we find the same types of composition changes by measuring husbands wages and national longitudinal survey iq data as proxies for unobserved skills our findings help to explain why growing wage equality between genders coincided with growing inequality within gender

structural change in an open economy we study the importance of international trade in structural change our framework has both productivity and trade cost shocks and allows for non unitary income and substitution elasticities we calibrate our model to investigate south korea s structural change between 1971 and 2005 we nd that the shock processes propagated through the model s two main transmission mechanisms non homothetic preferences and the open economy explain virtually all of the evolution of agriculture and services labor shares and the rising part of the hump shape in manufacturing counterfactual exercises show that the role of the open economy is quantitatively important for explaining south korea s structural change

counterfactual decomposition of changes in wage distributions using quantile regression we propose a method to decompose the changes in the wage distribution over a period of time in several factors contributing to those changes the method is based on the estimation of marginal wage distributions consistent with a conditional distribution estimated by quantile regression as well as with any hypothesized distribution for the covariates comparing the marginal distributions implied by different distributions for the covariates one is then able to perform counterfactual exercises the proposed methodology enables the identification of the sources of the increased wage inequality observed in most countries specifically it decomposes the changes in the wage distribution over a period of time into several factors contributing to those changes namely by discriminating between changes in the characteristics of the working population and changes in the returns to these characteristics we apply this methodology to portuguese data for the period 1986 1995 and find that the observed increase in educational levels contributed decisively towards greater wage inequality copyright 2005 john wiley sons ltd

on the conservation of distance in international trade the volume of world trade has grown more than twice as fast as real world income since 1980 surprisingly the effect of distance on trade has increased during this period it could be that countries are trading greater volumes of goods that are highly sensitive to distance an alternative explanation is that distance has become more import for a significant share of goods using highly disaggregated bilateral trade data we find that adjustment in the composition of trade has not influenced the way in which distance affects trade in contrast for about 25 percent of industries distance has become more important this implies that the increased distance sensitivity of trade is a result of a change in relative trade costs that affects many industries as opposed to a shift to more distance sensitive products we also find that homogeneous products are twice as likely to have become more distance sensitive as compared with differentiated goods this is consistent with the hypothesis that falling search costs resulting from improvements in transport and communications are relatively more important for differentiated goods the results offer no evidence of the death of distance rather they suggest that distance related relative trade costs have remained unchanged or shifted in favor of proximate markets

risk sharing networks and insurance against illness most risk sharing tests on developing country data are conducted at the level of the village generally the full risk sharing hypothesis is rejected this paper uses detailed data on all insurance networks within a village in tanzania networks are not clustered but largely overlapping we test whether full risk sharing occurs within these networks while village level full insurance cannot be rejected for food consumption we find evidence consistent with at least partial insurance of non food consumption via networks

winners and losers in russia s economic transition the transition to a market economy has produced a substantial and rapid change in the wage structure in russia household surveys taken before and after the transition indicate that overall wage inequality nearly doubled from 1991 to 1994 and has reached a level higher than that in the united states returns to both measured skills education occupation and unmeasured skills within groups have increased considerably skill premiums across experience groups however have become more compressed and relative wages of older workers have declined in addition female wages have declined relative to male wages across all percentiles of the wage distribution copyright 1998 by american economic association

a meta analysis of the international gender wage gap abstract since the early 1970s a number of authors have calculated gender wage differentials between women and men of equal productivity this meta study provides a new quantitative review of this vast amount of empirical literature on gender wage differentials as it concerns not only differences in methodology data and time periods but also different countries we place particular emphasis on a proper consideration of the quality of the underlying study which is done by a weighting with quality indicators the results show that data restrictions i e the limitation of the analysis to new entrants never marrieds or one narrow occupation only have the biggest impact on the resulting gender wage gap moreover we are able to show what effect a misspecification of the underlying wage equation like the frequent use of potential experience has on the calculated gender wage gap over time raw wage differentials worldwide have fallen substantially however most of this decrease is due to better labor market endowments of females

unequal pay or unequal employment a cross country analysis of gender gaps we analyze gender wage gaps correcting for sample selection induced by nonemployment we recover wages for the nonemployed using alternative imputation techniques simply requiring assumptions on the position of imputed wages with respect to the median we obtain higher median wage gaps on imputed rather than actual wage distributions for several oecd countries however this difference is small in the united states the united kingdom and most central and northern eu countries and becomes sizable in southern eu countries where gender employment gaps are high selection correction explains nearly half of the observed negative correlation between wage and employment gaps

beyond publication bias abstract this review considers several meta regression and graphical methods that can differentiate genuine empirical effect from publication bias publication selection exists when editors reviewers or researchers have a preference for statistically significant results because all areas of empirical research are susceptible to publication selection any average or tally of significant insignificant studies is likely to be biased and potentially misleading meta regression analysis can see through the murk of random sampling error and selected misspecification bias to identify the underlying statistical structures that characterize genuine empirical effect meta significance testing and precision effect testing pet are offered as a means to identify empirical effect beyond publication bias and are applied to four areas of empirical economics research minimum wage effects union productivity effects price elasticities and tests of the natural rate hypothesis

what has 20 years of public private pay gap literature told us eastern european transitioning vs developed economies this paper surveys the literature on public private sector pay differentials based on 20 years of research in transitioning countries of eastern europe ee and compares the results with estimates obtained from developed market economies the majority of empirical studies from ee economies found evidence of public sector pay penalties during the period of economic transition from a communist to market based economy in developed economies however the average differential is usually around zero or positive the public sector pay inequality reducing effect relative to the private sector is greater in transitioning economies than in developed economies nevertheless there is evidence that the sign of the public sector pay gap as well as the relative public sector pay distribution change with the progress of economic transition towards those usually observed in developed economies different pay setting arrangements between private and public sectors and competition for workers seem to be major arguments for the existence of systematic pay differences between the two sectors

heterogeneity in risky choice behaviour in a broad population we analyse risk preferences using an experiment with real incentives in a representative sample of 1 422 dutch respondents our econometric model incorporates four structural parameters that vary with observed and unobserved characteristics utility curvature loss aversion preferences towards the timing of uncertainty resolution and the propensity to choose randomly rather than on the basis of preferences we find that all four parameters contribute to explaining choice behaviour the structural parameters are significantly associated with socio economic variables but it is essential to incorporate unobserved heterogeneity in each of them to match the rich variety of choice patterns in the data

comparative advantage and the welfare impact of european integration this paper investigates the welfare gains from european trade integration and the role of comparative advantage in determining the magnitude of those gains we use a multi sector ricardian model implemented on 79 countries and compare welfare in the 2000s to a counterfactual scenario in which east european countries are closed to trade for west european countries the mean welfare gain from trade integration with eastern europe is 0 16 ranging from zero for portugal to 0 4 for austria for east european countries gains from trade are 9 23 at the mean ranging from 2 85 for russia to 20 for estonia for eastern europe comparative advantage is a key determinant of the variation in the welfare gains countries whose comparative advantage is most similar to western europe tend to gain less while countries with technology most different from western europe gain the most andrei a levchenko and jing zhang

an experiment on risk taking and evaluation periods does the period over which individuals evaluate outcomes influence their investment in risky assets results from this study show that the more frequently returns are evaluated the more risk averse investors will be the results are in line with the behavioral hypothesis of myopic loss aversion which assumes that people are myopic in evaluating outcomes over time and are more sensitive to losses than to gains the results have relevance for the equity premium puzzle and also for the marketing strategies of fund managers

does africa need a rotten kin theorem experimental evidence from village economies this paper measures the economic impact of social pressure to share income with kin and neighbors in rural kenyan villages the authors conduct a lab experiment in which they randomly vary the observability of investment returns the goal is to test whether subjects reduce their income in order to keep it hidden the analysis finds that women adopt an investment strategy that conceals the size of their initial endowment in the experiment although that strategy reduces their expected earnings this effect is largest among women with relatives attending the experiment parameter estimates suggest that women behave as though they expect to be pressured to share four percent of their observable income with others and substantially more when close kin can observe income directly although this paper provides experimental evidence from a single african country observational studies suggest that similar pressure from kin may be prevalent in many rural areas throughout sub saharan africa

wage structure and gender earnings differentials an international comparison using microdata to analyse the gender pay gap in ten industrialized nations we focus on the role of wage structure the prices of labour market skills in influencing the gender gap we find wage structure enormously important in explaining why the us gender gap is higher than that in most other countries we conclude that the us gap would be similar to that in sweden and australia the countries with the smallest gaps if the united states had their levels of wage inequality this finding reflects the larger penalty in the united states for those with low skill levels or employed in low wage sectors 650 o 75 the united states was amoung the countries with the largest differ entials oecd ilo usbls this paper uses microdata to analyse inter national differences in the gender pay gap among a sample of ten industrialized nations we focus particularly on explaining the surprisingly low ranking of the united states in comparison with other industrialized countries an advan tage of an international perspective is that countries vary considerably with respect to governmental policies women s relative labour market qualifications and wage setting institutions such variability allows one to infer reasons for differences in the pay gap and by implication the impact of alternative govern ment policies empirical research on gender pay gaps has traditionally focused on the role of gender differences in qualifications and on differences in the treatment of otherwise equally qualified male and female workers i e labour market dis crimination analyses of trends over time in the gender differential within countries as well as inter country comparisons of gender earnings ratios have tended to emphasize these types of gender specific factors an innovative feature of our study is to focus on the role of wage structure as an additional factor influencing the gender gap to analyse the impact of wage structure we adapt a framework developed by juhn et al 1991 to analyse trends over time in race differentials in the united states our findings suggest that labour market institutions that affect overall wage inequality have an extremely impor tant effect on the gender earnings gap wage structure describes the array of prices set for various labour market skills measured and unmeasured and rents received for employment in par

salaried employment and earnings in indonesia new evidence on the selection bias this article uses household survey data to estimate the determinants of earnings in indonesia a country where nonsalaried work is widespread and earnings data are available for salaried employees only we deal with the selection bias by estimating a full information maximum likelihood fiml system of equations where selection into the labour market is modelled in a multinomial setting we find that some estimated parameters of the earnings equation differ from a binomial selection procedure by heckman 1979 in particular for those variables with the strongest impact on the selection into the different labour market statuses however the estimated returns to education are unaffected even when we deal with the endogeneity of educational attainment following duflo 2001 overall our findings show that the choice of the selection rule affects the estimates of the earnings determinants in the indonesian labour market

matching as a tool to decompose wage gaps abstract this paper presents a methodology that uses matching comparisons to explain gender wage differences the approach emphasizes gender differences in the supports of the distributions of observable characteristics and provides insights into the distribution of unexplained gender pay differences this nonparametric alternative to the blinder oaxaca bo decomposition does not require the estimation of earnings equations and divides the gap into four additive elements two of these are analogous to the elements of the bo decomposition but computed only over the common support of the distributions of characteristics while the other two account for differences in the supports

payment mechanisms and antipoverty programs evidence from a mobile money cash transfer experiment in niger abstractcash transfers have become an increasingly important component of social protection policies in both developed and developing countries while such programs are often implemented electronically in developed countries in many developing countries with weak financial infrastructure such transfers are distributed manually resulting in significant costs to program recipients and the public sector alike the introduction of mobile money systems in many developing countries offers new opportunities for distributing cash transfers using data from a randomized experiment of a mobile money cash transfer program in niger we find evidence of benefits of this new system household diet diversity was 9 16 higher among households who received mobile transfers and children ate an additional one third of a meal per day these results can be partially attributed to time savings associated with mobile transfers as program recipients spent less time traveling to and waiting for their transfer they are also

gender wages and discrimination in the ussr a study of a russian industrial town male and female wage equations are estimated from survey data from the city of taganrog in 1989 the first such estimates on data collected in the ussr reductions in working hours for low paid female professionals resulting in relatively high hourly rates encouraged women to acquire higher education while maintaining an unequal and conservative gender division of labour decomposition of the wage gap shows strong indications of discrimination a wage function estimated from the pooled sample as in oaxaca and ransom 1994 explains a larger share of the gender gap but does so because it disregards aspects of discrimination

relief programs when it may be better to give food instead of cash abstract a standard way to give relief to the needy is to organize employment or public works programs it is often argued that in many situations paying workers in cash instead of food may be the superior option the aim of this paper is to caution that some plausible spillover effects may weaken this argument observe that paying wages in food and in cash can have differential effects on prices a cash for work program would typically enhance the demand for food cause food prices to rise and result in more food in the hands of those who have received the wages this will mean that those who are left out of the program for example the old and the infirm could be worse off

vertical specialization and gains from trade multi stage production is widely recognized as an important feature of the modern global economy this feature has been incorporated into many state of the art quantitative trade models and has been shown to deliver significant additional gains from international trade

women in transition changes in gender wage differentials in eastern europe and the former soviet union under state socialism women fared relatively well in the labor market female male wage differentials were similar to those in the west and female labor force participation rates were among the h

labor market discrimination against hispanic and black men h ispanic american men have lower average wage rates than white non hispanics in 1975 the average white non hispanic male wage earner in the united states earned 5 97 an hour mexican men earned 4 31 72 as much as white non hispanics puerto rican men earned 4 52 76 as much and cuban men earned 5 33 89 as much as white non hispanics by way of comparison black men s average wages in 1975 were 4 65 78 of the white male wage several possible reasons for the hispanics lower wages come to mind among them are age and education geographic location immigration language difficulties and discrimination for example as shown in table 1 mexicans and puerto ricans are younger on average than the white non hispanic population and earnings tend to rise with age hispanics have lower average levels of education than white non hispanics and wages are positively associated with education many mexican americans live in the southwest where prices are relatively low moreover hispanics are more likely to be recent immigrants and to lack fluency in english than white non hispanics and so to be at a disadvantage in the labor market in addition there is a widespread belief that hispanics suffer from employment discrimination and cannot obtain the wages that their human capital would command if they were non hispanic whites how much of the wage differentials described above are due to each of these factors and to other inter group differences in wage related characteristics in particular how much impact does labor market discrimination have on the average hispanic man s wage and how does this compare with discrimination against blacks this paper provides answers to these questions a few other efforts have been made to analyze the relative earnings of hispanic and white nonhispanic men using 1960 and 1970 census data fogel 1966 poston and alvirez 1973 poston alvirez and tienda 1976 long 1977 and gwartney and long 1978 we use more recent data from the 1976 survey of income and education this data set enables us to measure wage rates more accurately and to specify the wage function more completely than does the census unlike previous analysts in estimating the wage function we take account of possible selectivity bias due to the distinction between average wage offers and average observed wages thus we hope to obtain a more accurate and up to date measure of labor market discrimination against hispanic men section ii explains the method used to separate the minority white non hispanic wage differential into the portions due to differences in average characteristics and the portion due to differences in unobserved factors and discrimination taking into account the possibility of selectivity bias in the observed wage sample section iii describes the data used in the study and the specification of the wage equation the breakdown of the observed wage differentials into components due to differences in participation in the wage and salary sector local price levels average characteristics and discrimination are presented in section iv section v summarizes our findings and discusses their implications for efforts to improve the economic situation of hispanics in the united states

pretending to be poor borrowing to escape forced solidarity in cameroon abstractfrom field observations of credit cooperatives in cameroon we find that 19 of the loans taken are fully collateralized by savings held in the same institutions this behavior is costly to the borrower as it represents a net interest payment of about 24 per year while traditional explanations may partly explain this behavior interviews with members of the cooperatives suggest the following new rationale members resort to borrowing to signal to friends and relatives that they are poor and do not have savings available by doing so they can avoid requests for financial help we develop a signaling model to analyze the conditions under which this behavior is an equilibrium outcome

male female wage differentials and policy responses without implicating them for any of the contents of the paper i am grateful to the following for helpful discussions or comments andrea beller university of illinois david bloom harvard and columnbia glen cain university of wisconsin ron ehrenberg cornell victor fuchs stanford bob gregory australian national university jonathan leonard university of california berkeley roberta robb brock university and paul weiler harvard financial support of the humanities and social sciences committee of the research board of the universitu of toronto is eratefullu acknowlede ed

optimal contracts under costly state falsification we examine an exchange economy with two agents one risk neutral with a certain endowment and a second risk averse with a random endowment the realization of the endowment is public but can be falsified by the second agent at a cost for a broad class of falsification cost functions the optimal no falsification contract is noncontingent on a left hand interval and strictly increasing with a slope strictly less than one on a right hand interval under a mild further restriction optimal no falsification contracts are in addition piece wise linear optimal contracts may in general require falsifying the state but for a set of the highest endowment realizations there is no falsification we find simple conditions under which the optimal contract is a no falsification contract the model has applications that include financial insurance and employment contracts and tax policy

ricardian productivity differences and the gains from trade abstract this paper evaluates the role of sectoral heterogeneity in determining the gains from trade we first show analytically that in the presence of sectoral ricardian comparative advantage a one sector sufficient statistic formula that uses total trade volumes as a share of total absorption systematically understates the true gains from trade greater relative sectoral productivity differences lead to larger disparities between the gains implied by the one sector formula and the true gains using data on overall and sectoral trade shares in a sample of 79 countries and 19 sectors we show that the multi sector formula implies on average 30 higher gains from trade than the one sector formula and as much as 100 higher gains for some countries we then set up and estimate a quantitative ricardian heckscher ohlin model in which no version of the formula applies exactly and compare a range of sufficient statistic formulas to the true gains in this model confirming the earlier results formulas that do not take into account the sectoral heterogeneity understate the true gains from trade in the model by as much as two thirds the one sector formulas understate the gains by more in countries with greater dispersion in sectoral productivities

revising commitments field evidence on the adjustment of prior choices the very poor in developing countries often make intertemporal choices that seem at odds with their individual self interest there are many possible reasons why this paper investigates several of these reasons with a lab in the field experiment in rural malawi involving large stakes it makes two contributions first it constructs a new dependent variable revisions of prior choices regarding the allocation of future income this allows us to directly examine intertemporal choice revision and its determinants in particular this dependent variable permits a novel test for the existence of self control problems it turns out revisions of money allocations toward the present are positively associated with measures of present bias from an earlier baseline survey as well as the randomly assigned closeness in time to the first possible date of money disbursement second the paper investigates other potential determinants of revision aside from self control problems it finds little evidence that revisions of money allocations toward the present are associated with spousal preferences for such revision household shocks or the financial sophistication of respondents

diversification through trade a widely held view is that openness to international trade leads to higher income volatility as trade increases specialization and hence exposure to sector specific shocks contrary to this common wisdom we argue that when country wide shocks are important openness to international trade can lower income volatility by reducing exposure to domestic shocks and allowing countries to diversify the sources of demand and supply across countries using a quantitative model of trade we assess the importance of the two mechanisms sectoral specialization and cross country diversification and show that in recent decades international trade has reduced economic volatility for most countries

measuring international trade costs the costs of international trade have become an increasingly important item in trade negotiations under the heading trade facilitation and element of trade theory but definition and measurement of trade costs remain in their infancy this paper argues that the most conceptually appropriate measure is the gap between cost insurance freight cif and free on board fob values of traded goods but that this must be measured on a consistent volume of trade such data are only available for a few countries we calculate cif fob gap values for the three largest trading nations that report such data australia brazil and the usa these values provide plausible estimates of ad valorem trade costs for the three importing countries and for all countries exports the estimates indicate that although trade costs have fallen over the last two decades average trade costs now exceed the average tariff rate on imports into the usa and australia country rankings by the cif fob gap values differ significantly from those by commonly used proxies for trade costs such as the indicators of time and cost in the world bank s doing business database and analysis based on such proxies is likely to produce misleading results