property rights externalities and resource degradation locating the tragedy abstract resource degradation in the third world is largely driven by the demands of farm households for fuelwood and land for agriculture since resources are often controlled through indigenous systems of property the tragedy of the commons has been used to explain resource degradation as a result private property is suggested as a solution to resource degradation a dynamic model capable of examining household incentives for resource use under private and common property is developed results of the model reject the conventional wisdom that gives rise to the presumed optimality of private individual property in natural resources and the correlated indictment of group management regimes

assessing the case for social experiments rs ecent academic debates pit two alternative approaches to policy evaluation against one another the first is the experimental approach based on the random assignment of accepted program applicants to a recipient or treatment group and a non recipient or control group the second is the nonexperimental or econometric approach that uses a variety of microdata sources statistical methods and behavioral models to compare the outcomes of participants in social programs with those of nonparticipants the central question addressed in this paper is whether or not randomized social experiments aid in securing answers to basic questions about the evaluation of social programs there are many distinct and complementary approaches to the study of the impact of public policy including full general equilibrium analysis of policy impacts tinbergen 1956 auerbach and kotlikoff 1987 shoven and whalley 1992 kydland and prescott 1991 and less ambitious partial equilibrium microeconomic structural research programs such as those designed to estimate the impact of taxes on labor supply both approaches offer answers to many interesting counterfactual policy questions but their credibility rests critically on the quality of the empirical input used to generate their answers

the effects of unions on investment and innovation evidence from wirs the above is representative of much popular discussion of the effects of unions on investment and innovation in the professional literature the view that unions deter investment by expropriating quasi rents is also commonplace see e g simons i944 baldwin i983 grout i984 in addition it is argued that union foisted restrictive work practices might make investment a more costly process see e g denny and nickell i989 in recent years the above theoretical notions have appeared to receive some empirical support in that in the united states the level of the investment capital ratio does appear to be lower in union firms see hirsch i988 and references therein in this paper we use information contained in the i 984 workplace industrial relations survey in order to investigate the actual impact of unions on investment the rest of the paper is organised as follows in section i i we informally review the alternative channels through which unions might affect investment section i 2 contains a simple theoretical model of investment which embodies all the alternative channels our results are to be found in section ii and finally some conclusions are contained in section iii

corporate governance and innovation a survey abstract the traditional economics of innovation inspired by schumpeter and more recent advances on his work seem unable to explain why firms with similar external conditions may show greatly different performance in innovation contrastingly the literature on corporate governance provides some useful insights for understanding corporate innovation activity to the extent that such literature examines the economic effects of different modes of coordination between firm members the process through which individuals integrate their human and physical resources within the firm is central to the dynamics of corporate innovation this paper provides the first survey of the literature on this issue we start by discussing how various theoretical approaches to the analysis of the firm deal with technological innovation we then describe three main channels corporate ownership corporate finance and labour through which a system of corporate governance shapes a firm s innovation activity finally we examine the relationship between country level institutional settings national patterns of corporate governance and the aggregate innovation activity of corporations we conclude by suggesting that future research should focus more deeply on the interrelation between the various dimensions of corporate governance and on their joint effect on firm innovation

participation in school sponsored sports and academic spillovers new evidence from the early childhood longitudinal survey the link between participation in school sponsored sports and academic performance has been studied extensively in the literature whilst previous studies tend to show positive academic spillovers

using selection on observed variables to assess bias from unobservables when evaluating swan ganz catheterization distinguishing causal effects from correlations is a key objective of research regardless of field even in medicine controlled experiments are not always practical or ethical in economics and we suspect in most other fields identification strategies based upon observational data are rarely bulletproof in their landmark study a f connors et al 1996 use propensity score matching methods with an extremely rich set of demographic characteristics and health status measures to assess whether swan ganz catheterization 1c 2 a widely used device for monitoring intensive care unit icu patients raises or lowers mortality in their sample of icu patients they find that receiving c within the first 24 hours raises mortality rates casting serious doubt on the value of this procedure for critically ill patients jay bhattacharya azeem m shaikh and edward vytlacil 2007 2008 hereafter bsv observe that since c recipients are sicker on many observed dimensions propensity score matching which ignores selection on unobservables might overstate the negative consequences of c they apply a set of bounds estimators including an extension of shaikh and vytlacil 2004 that incorporates prior information that weekend applications of recent methodology in project evaluation

unions innovation and investment australian evidence machin and wadhwani have produced evidence indicating that trade unions encourage investment in the uk this paper uses comparable data to ascertain whether their finding holds with respect to australia in general and contrary to the uk study the net effect of unions on investment in australia is found to be negative nevertheless investment levels at workplaces where unions were active were above the levels at non union workplaces offering support for the union voice hypothesis which machin and wadhwani use to explain their results

rules and games this paper reconsiders the relationship between the rules of a game and its outcomes we develop a notion of rule reform that leads to the selection of pareto improved equilibria points we then apply this notion to a series of naturally occurring fishing rules including examples from malaysia india brazil turkey and canada we show that reforming a game is conceptually akin to reforming an economy

assessing the frontiers of ultrapoverty reduction evidence from challenging the frontiers of poverty reduction targeting the ultra poor an innovative program in bangladesh abstractthis article uses household panel data to provide robust evidence on the effects of brac s building resources across countries targeting the ultra poor tup program in bangladesh we use alternative treatment comparison pairs in addition to brac s own classification we exploit type 1 errors in assignment in brac s selection process to create a second treatment comparison pair this allows us to estimate the program effects on the target group not contaminated by mistargeting to address selection on unobservables we implement heteroskedasticity based identification and two recent estimators based on matching and propensity score reweighting the results show that participation had significant positive effects on food security clothing shoes livestock and cash savings but there is weak or no evidence of an impact on the number of household durables and assets and indicators of health and women s empowerment the effects on the poorest of the poor the target group may be different from

flypaper effects in transfers targeted to women evidence from brac s targeting the ultra poor program in bangladesh abstract many development interventions target transfers to women however little evidence directly explores the flypaper effects of whether women retain control over these transfers once within the household and how reallocation of the transfers affects women s empowerment we study these dynamics in the context of brac s randomized cfpr tup program in bangladesh which provides livestock and training to rural women in ultra poor households our analysis confirms previous findings that cfpr tup increased household asset ownership but shows complex effects on targeted women women appear to retain ownership over transferred livestock but new investments from mobilized resources are largely owned by men cfpr tup also reduces women s movement outside the home and control over income consistent with transferred livestock requiring maintenance at home however beneficiary women also report intangible benefits such as increased social capital and even with limited mobility a preference for work inside the home given a hostile environment outside the home

selection on observed and unobserved variables assessing the effectiveness of catholic schools in this paper we measure the effect of catholic high school attendance on educational attainment and test scores because we do not have a good instrumental variable for catholic school attendance we develop new estimation methods based on the idea that the amount of selection on the observed explanatory variables in a model provides a guide to the amount of selection on the unobservables we also propose an informal way to assess selectivity bias based on measuring the ratio of selection on unobservables to selection on observables that would be required if one is to attribute the entire effect of catholic school attendance to selection bias we use our methods to estimate the effect of attending a catholic high school on a variety of outcomes our main conclusion is that catholic high schools substantially increase the probability of graduating from high school and more tentatively attending college we find little evidence of an effect on test scores

gender assets and agricultural development lessons from eight projects ownership of assets is important for poverty reduction and women s control of assets is associated with positive development outcomes at the household and individual levels this research was undertaken to provide guidance for agricultural development programs on how to incorporate gender and assets in the design implementation and evaluation of interventions this paper synthesizes the findings of eight mixed method evaluations of the impacts of agricultural development projects on individual and household assets in seven countries in africa and south asia the results show that assets both affect and are affected by projects indicating that it is both feasible and important to consider assets in the design implementation and evaluation of projects all projects were associated with increases in asset levels and other benefits at the household level however only four projects documented significant positive impacts on women s ownership or control of some types of assets relative to a control group and of those only one project provided evidence of a reduction in the gender asset gap the quantitative and qualitative findings suggest ways that greater attention to gender and assets by researchers and development implementers could improve outcomes for women in future projects

labor markets and poverty in village economies we study how women s choices over labor activities in village economies correlate with poverty and whether enabling the poorest women to take on the activities of their richer counterparts can set them on a sustainable trajectory out of poverty to do this we conduct a large scale randomized control trial covering over 21 000 households in 1 309 villages surveyed four times over a seven year period to evaluate a nationwide program in bangladesh that transfers livestock assets and skills to the poorest women at baseline the poorest women mostly engage in low return and seasonal casual wage labor while wealthier women solely engage in livestock rearing the program enables poor women to start engaging in livestock rearing increasing their aggregate labor supply and earnings this leads to asset accumulation livestock land and business assets and poverty reduction both accelerating after four and seven years these gains do not come at the expense of others non eligibles livestock rearing businesses are not crowded out and wages received for casual jobs increase as the poor reduce their labor supply in such labor activities our results show that i the poor are able to take on the work activities of the non poor but face barriers to doing so and ii one o interventions that remove these barriers lead to sustainable poverty reduction

child health and household resources in south africa evidence from the old age pension program this paper presents nonparametric evidence on the effects of the expansion of the old age pension program in south africa on child health did this increase in household resources improve child health and nutrition does the gender of the recipient of the pension affect its impact the answers to these questions have very important policy implications there is evidence that inadequate nutrition during childhood and even in utero affects long term physical development as well as the development of cognitive skills this in turn affects productivity later in life see partha dasgupta 1993 john strauss and duncan thomas 1998 t paul schultz 1999 in the united states the evidence suggests that monetary transfers to the poor have very little impact on child welfare janet currie 1995 susan mayer 1997 however the effects of parental income and monetary transfers on child outcomes are likely to be of greater magnitude among poor households in developing countries the south african pension program provides an unusual opportunity to evaluate the possible effects of such a monetary transfer this paper exploits the rapid increase in the coverage and benefits of the old age pension program in south africa which took place in the early 1990 s anne case and angus deaton 1998 at the end of the apartheid era the government committed to achieving parity of benefits and eligibility requirements between whites and africans this was achieved mostly by increasing the benefits received by the africans in 1993 80 percent of african women above age 60 and 77 percent of african men above 65 received the pension the maximum benefit of 370 rands per month aproximately 3 per day was equal to half of the minimum wage and about twice the median income per capita in rural areas due to living arrangements inherited from the apartheid era close to onethird of african children under the age of 5 currently live with a pension recipient children who live with a pension recipient tend to come from relatively disadvantaged backgrounds as a consequence they tend to be smaller than other children their age to estimate the effect of receiving a pension on the anthropometric status of children this paper exploits the fact that height reflects accumulated investments in child nutrition the larger the proportion of her life during which a child is well nourished the taller she will be given her age due to the expansion of the program in the early 1990 s individuals of qualified age became more likely to receive a pension and the benefits became substantially larger thus children born after the expansion of the program are more likely to have spent a larger fraction of their lives wellnourished if they live with a pension recipient to the extent that the pension resulted in improved nutrition in this paper i present nonparametric evidence of the program s effect on nutrition based on this observation

union rent seeking intangible capital and market value of the firm abstract this study considers the effect of unions on intangi ble capital investment and profitability within the context of a market value rather than a more traditional accounting based approach theory is provided suggesting unions are able to affect profitability by sharing in the economic returns to firm specific intangible capital in support of this hypothesis we find unionization reduces the returns to r d and produces a corresponding limiting influence on r d investment at the firm level i introduction a n extensive literature in economics has ex amined the determinants of profitability with much of the focus centering on the role of market structure only recently however have the effects of labor unions on profitability been analyzed ths is surprising since labor economists long have emphasized union influences on wages and productivity that in turn may affect profitabil ity in recent studies freeman 1983 and karier 1985 report a significant limiting influence of unions on price cost margins in high concentra tion manufacturing industries using firm level data and the market based tobin s

unions and investment in british industry this paper presents an empirical analysis of investment in british industry using data at the industry level and focusing on union effects the authors find that the rate of investment is around 28 percent lower in firms that recognize unions and have an average union density relative to those in which unions are not recognized this is the gross effect holding wages product prices and productivity constant if we take account of union effects on these as well the overall effect is an investment reduction of 16 percent in competitive firms and 3 percent in noncompetitive firms copyright 1992 by royal economic society

how much can asset transfers help the poorest evaluating the results of brac s ultra poor programme 2002 2008 abstract the impacts of an innovative programme in rural bangladesh which has assisted extremely poor households literally the poorest of the poor were assessed over a six year period 2002 2008 the provision of a substantial dose of assets has helped produce very positive results by and large vulnerability to downturns on account of negative events such as illnesses and house damage has resulted in asset losses for several assisted households additional measures that reduce vulnerability and risk will help complete the good work commenced by the asset transfer plan

sport event attendance as a function of education evidence from the uk abstractthis article studies the role of education in the decision to attend sporting events the overall objective is to verify whether more educated individuals are more likely to go to sports events than their less educated counterparts if education socializes persons to focus on sports it would then partially offset negative alternatives such as alcohol drug abuse and unlawful behaviours creating a positive externality sport events consumption is extensive highlighting the potential economic importance of the sports education externality to establish the role of education in sport attendance this article applies a probabilistic linear regression model to data from the uk the econometric formulation associates sport event attendance in the left hand side with education in the right hand side while controlling for the socioeconomic variables that are known to affect a consumer s decision to go to a sport event gender age income employment status children marital status and geographical

property rights regimes and natural resources a conceptual analysis the term common property resource is an example of a term repeatedly used to refer to property owned by a government or by no one it is also used for property owned by a community of resource users such usage leads to confusion in scientific study and policy analysis in this paper we develop a conceptual schema for arraying property rights regimes that distinguishes among diverse bundles of rights ranging from authorized user to claimant to proprietor and to owner we apply this conceptual schema to analyze findings from a variety of empirical settings including the maine lobster industry

spousal control and intra household decision making an experimental study in the philippines i elicit causal effects of spousal observability and communication on financial choices of married individuals in the philippines when choices are private men put money into their personal accounts when choices are observable men commit money to consumption for their own benefit when required to communicate men put money into their wives account these strong treatment effects on men but not women appear related more to control than to gender men whose wives control household savings respond more strongly to the treat ment and women whose husbands control savings exhibit the same response changes in information and communication interact with underlying control to produce mutable gender specific outcomes

australian evidence on the exit voice model of the labor market two predictions of the exit voice model of union activity that have been confirmed by empirical research in the united states are that union workers will have longer tenures and lower quit rates th

opening up pandora s box the effect of gender targeting and conditionality on household spending behavior in mexico s progresa program summary this paper evaluates the behavioral impact of conditionality and gender targeting on spending behavior in the progresa conditional cash transfer cct program from rural mexico results indicate that transfer income is not spent differently from general income suggesting that transfers exert only an income effect in addition women who have increased control over their extra cash are not significantly more likely to spend it in a family friendly way than they do household earned income both features entail significant costs to beneficiaries and program budgets our results indicate that further evidence is needed to confidently advocate for their inclusion in cash transfer ct programs

the empirical content of nash bargained household behavior in households whose allocation decisions can be represented as nash bargained household decisions extrahousehold environmental parameters eeps serve as pure shifters of the threat points the comparative statics of changes in demands due to changes in these eeps are given these are incorporated into a comprehensive statement of the empirical content of nash bargained household behavior including a nash generalization of barten s 1966 fundamental matrix equation of the theory of consumer demand estimation and data requirements are discussed along with nested testing of the following structure the neoclassical model is nested in the nash bargained model which in turn is nested in an unrestricted model of household demands emphasized throughout is the enriched menu of explanatory variables for demand analysis provided by the nash model as well as the model s ability to jointly analyze i household formation and ii intrahousehold allocation decisions

the mobilization of women s labor for cash crop production a game theoretic approach in the last decade or so economists have modeled phenomena such as household labor supply fertility behavior and child survival rates using the household as the unit of analysis this paper presents data that call into question the assumption that the household is a joint decision making unit which maximizes a neoclassical household utility function the data come from a study of the mobilization of women s labor by their husbands for irrigated rice production in north cameroon the first section of this paper describes briefly the massa rice and sorghum farming system and then considers the relationship between the amount of compensation women receive from their husbands for their labor on rice production and the amount of labor they allocate to rice production the findings suggest that a bargaining model may describe the intrahousehold relations of production and distribution better than the neoclassical model the second section specifies a nash bargaining model and contrasts it with the neoclassical model of the household using the bargaining framework the third section explores in more detail possible explanations of the allocative inefficiency which seems to characterize many of the rice cultivating households

an analysis of sample attrition in panel data the michigan panel study of income dynamics by 1989 the michigan panel study on income dynamics psid had experienced approximately 50 percent sample loss from cumulative attrition from its initial 1968 membership we study the effect of this attrition on the unconditional distributions of several socioeconomic variables and on the estimates of several sets of regression coefficients we provide a statistical framework for conducting tests for attrition bias that draws a sharp distinction between selection on unobservables and on observables and that shows that weighted least squares can generate consistent parameter estimates when selection is based on observables even when they are endogenous our empirical analysis shows that attrition is highly selective and is concentrated among lower socioeconomic status individuals we also show that attrition is concentrated among those with more unstable earnings marriage and migration histories nevertheless we find that these variables explain very little of the attrition in the sample and that the selection that occurs is moderated by regression to the mean effects from selection on transitory components that fade over time consequently despite the large amount of attrition we find no strong evidence that attrition has seriously distorted the representativeness of the psid through 1989 and considerable evidence that its cross sectional representativeness has remained roughly intact

can school sports reduce racial gaps in truancy and achievement while existing research supports that participation in high school athletics is associated with better education and labor market outcomes the mechanisms through which these benefits accrue are not well established using individual microdata collected daily and team specific schedules we retrieve estimates of the causal effect of high school athletic participation on absenteeism suggesting that participation decreases absences driven primarily by reductions in unexcused absences in boys there are also strong game day effects in truancy in both boys and girls with truancy declines on game days more than offset by subsequent absenteeism important heterogeneity by race gender and family structure may serve to substantially reduce racial gaps in truancy and achievement jel i21 l83

the effect of adolescent experience on labor market outcomes the case of height taller workers receive a wage premium net of differences in family background the disparity is similar in magnitude to the race and gender gaps we exploit variation in an individual s height over time to explore how height affects wages controlling for teen height essentially eliminates the effect of adult height on wages for white men the teen height premium is not explained by differences in resources or endowments the teen height premium is partially mediated through participation in high school sports and clubs we estimate the monetary benefits of a medical treatment for children that increases height

the economical management of multispecies fisheries resource based theory implicitly assumes that property rights to resources are secure extant property rights theory enables us to relax this assumption to take into account processes where there are struggles in establishing property rights that enhance

the effect of child health insurance access on schooling evidence from public insurance expansions although a sizable literature analyzes the effects of public health insurance programs on short run health outcomes little prior work has examined their long term effects we examine the effects of public insurance expansions among children in the 1980s and 1990s on their future educational attainment we find that expanding health insurance coverage for low income children increases the rate of high school and college completion these estimates are robust to only using federal medicaid expansions and mostly are due to expansions that occur when the children are not newborns our results indicate that the long run benefits of public health insurance are substantial

contracting problems and regulation the case of the fishery the inefficiencies of common property fisheries are of continuing concern to economists the early work by scott gordon 1954 and anthony scott 1955 outlined the problem and later studies by james crutchfield and giulio pontecorvo 1969 and frederick bell 1972 provided empirical estimates of the losses that result those studies were followed by the dynamic models of colin clark 1976 and james quirk and vernon smith 1970 of optimal harvest rates and the use of corrective taxes or quotas to achieve them but in spite of a large and growing literature and the persuasiveness of the outlined efficiency criteria most fisheries retain common property aspects with overcapitalization and excessive labor input why those conditions persist and the failure of the regulatory response to them are the issues addressed in this paper we examine a number of fisheries but focus on the texas shrimp industry which is one of the nation s most valuable fisheries for a single species and which shares the common property characteristics observed elsewhere it is considered overcapitalized and catch per unit of effort is falling 2 examination of the fishery reveals the many margins along which rent dissipation occurs and the nature of the regulations necessary for controlling fishing effort to avoid those losses the regulatory environment in texas is complicated by conflict within the fishery between inshore and offshore fishermen the latter assert that bay shrimping reduces the number of shrimp that successfully migrate to the gulf the inshore fishery is highlighted by another issue the recent resettlement of some 30 45 000 vietnamese refugees including many fishermen along the texas coast marine advisory service paul starr their entry has been met by hostility and violence from existing shrimpers who recognize that they are in an environment characterized by the absence of property rights bay shrimpers have lobbied the texas legislature for broad limits on new entrants yet ironically the sale of additional boats by individual shrimpers to the vietnamese has facilitated entry of the refugees into the fishery regulations in the texas shrimp and other fisheries are incomplete leaving many options for rent dissipation uncontrolled because of high contracting costs among fishermen and political factors that mold government actions contracting costs are high among heterogeneous fishermen who vary principally with regard to fishing skill 3 montana state university and texas a m university respectively we benefitted from comments by terry anderson raymond c battalio gardner brown oscar burt micha gisser wade griffin john r moroney anthony d scott peter temin and participants in workshops at texas a m university and the university of washington research assistance was provided by scott barnhart and phil mizzi funding was provided by sea grant texas a m university throughout this paper we use the terms common property and open access interchangeably here the terms describe a situation where no property rights group or individual exist s for the resource 2catch per unit of effort in the inshore texas gulf and federal gulf waters is presented for 1963 77 by w l griffin c g tydlacka and w e grant they show catch per unit of effort generally falling in inshore and offshore waters while catch per unit of effort fluctuates from year to year it falls from approximately 360 kg shrimp per unit of effort to 220 kg from 1963 to 1977 the common property nature of the fishery is reflected in the following statistics since 1975 the number of vessels has grown by 23 percent nelson swartz for fish houses the record of entry is similar between 1970 a d 1977 the number of firms grew from 259 to 287 though during that period many left the industry as others entered the number of fish houses was calculated from license data supplied by the texas parks and wildlife department the record of entry by fish houses suggests that monopsony as discussed by colin clark and gordon munro is absent in the fishery 3there may be minor differences in labor leisure choices and capital but our statistical evidence and discussions with fishermen indicate that catch variations are largely due to skill government regulations in the texas bays restrict capital and our empirical evidence shows boats to be relatively homogeneous

how does contract design affect the uptake of microcredit among the ultra poor experimental evidence from the river islands of northern bangladesh abstractthis study examines the demand of microcredit among ultra poor households in northern bangladesh we implemented a field experiment to identify what type of credit is best suited to their demand we found that the uptake rate by the ultra poor is the lowest for regular small cash credit followed by in kind credit we also found that the ultra poor are significantly more likely to join a microcredit programme than the moderately poor if a grace period with longer maturity is attached to a large amount of credit irrespective of whether the credit is provided in cash or in kind

separate spheres bargaining and the marriage market this paper introduces the separate spheres bargaining model a new model of distribution within marriage it differs from divorce threat bargaining models e g manser brown mcelroy horney in that the threat point is not divorce but a noncooperative equilibrium within marriage this noncooperative equilibrium reflects traditional gender roles the predictions of our model thus differ from those of divorce threat bargaining models in the separate spheres model cash transfer payments to the mother and payments to the father can but need not imply different equilibrium distributions in existing marriages in the long run the distributional effects of transfer policies may be substantially altered by changes in the marriage market equilibrium

is ignorance bliss the effect of asymmetric information between spouses on intra household allocations fundamental questions about how resources are allocated within the family remain unresolved because family decision making is a repeated game and there is caring it is generally posited that the marriage relationship exploits the high degree of information sharing between spouses even if official cash transfers themselves are common knowledge between household members the transfer may loosen constraints over other income sources less easily monitored empirical research has documented inefficient allocations between spouses and non cooperative behavior as a result of asymmetric information in migrant households however the implications of asymmetric information between cohabiting spouses are still relatively unexplored in this paper the authors used data from a field experiment in southern ghana to test the effect of windfalls on intra household allocation the results from the experiment indicate that spouses behave according to a non cooperative marital allocation contract with differences in spending patterns by gender

training wages and sample selection estimating sharp bounds on treatment effects this paper empirically assesses the wage effects of the job corps program one of the largest federally funded job training programs in the u s even with the aid of a randomized experiment the impact of a training program on wages is difficult to study because of sample selection a pervasive problem in applied microeconometric research wage rates are only observed for those who are employed and employment status itself may be affected by the training program this paper develops an intuitive trimming procedure for bounding average treatment effects in the presence of sample selection in contrast to existing methods the procedure requires neither exclusion restrictions nor a bounded support for the outcome of interest identification results estimators and their asymptotic distribution are presented the bounds suggest that the program raised wages consistent with the notion that the job corps raises earnings by increasing human capital rather than solely through encouraging work the estimator is generally applicable to typical treatment evaluation problems in which there is nonrandom sample selection attrition copyright wiley blackwell