Papers - All

Xavier Gine, Dean S Karlan

Cited by*: 12 Downloads*: 19

Group liability is often portrayed as the key innovation that led to the explosion of the microcredit movement, which started with the Grameen Bank in the 1970s and continues on today with hundreds of institutions around the world. Group lending claims to improve repayment rates and lower transaction costs when lending to the poor by providing incentives for peers to screen, monitor and enforce each other's loans. However, some argue that group liability creates excessive pressure and discourages good clients from borrowing, jeopardizing both growth and sustainability. Therefore, it remains unclear whether group liability improves the lender's overall profitability and the poor's access to financial markets. We worked with a bank in the Philippines to conduct a field experiment to examine these issues. We randomly assigned half of the 169 pre-existing group liability centers of approximately twenty women to individual-liability centers (treatment) and kept the other half as-is with group liability (control). We find that the conversion to individual liability does not affect the repayment rate, and leads to higher growth in center size by attracting new clients.

Alison Booth, Andrew Leigh

Cited by*: 23 Downloads*: 19

We test for gender discrimination by sending fake CVs to apply for entry-level jobs. Female candidates are more likely to receive a callback, with the difference being largest in occupations that are more female-dominated.

Daniel Jones, Sera Linardi

Cited by*: 16 Downloads*: 19

An extensive literature on reputation signaling in prosocial settings has focused on an intrinsic desire for positive reputation. In our paper, we provide experimental evidence that some individuals are averse to both positive and negative reputation and will therefore respond to visibility by signaling that they are an "average altruism type" relative to their audience. We formalize our hypotheses about "wallflower" behavior in a theoretical model. Our experimental results show that instead of uniformly increasing contributions, visibility draws contributions towards the middle of others' contributions. As a result, visibility is associated with higher levels of giving only when in scenarios where others are giving a large amount. We also observe heterogeneity in reputation concerns wallflower behavior is particularly strong for women and can be observed in several different settings.

Colin F Camerer

Cited by*: 23 Downloads*: 19

To test whether naturally occurring markets can be strategically manipulated, $500 and $1,000 bets were made, then cancelled, at horse racing tracks. The net effects of these costless temporary bets give clues about how market participants react to information large bets might contain. The bets moved odds on horses visibly (compared to matched-pair control horses with similar prebet odds) and had a slight tendency to draw money toward the horse that was temporarily bet, but the net effect was close to zero and statistically insignificant. The results suggest that some bettors inferred information from bets and others did not, and their actions roughtly cancelled out.

Orana Bandiera, Iwan Barankay, Imran Rasul

Cited by*: 0 Downloads*: 19

We present evidence from a firm level experiment in which we engineered an exogenous change in managerial compensation from fixed wages to performance pay based on the average productivity of lower-tier workers. Theory suggests that managerial incentives affect both the mean and dispersion of workers' productivity through two channels. First, managers respond to incentives by targeting their efforts towards more able workers, implying that both the mean and the dispersion increase. Second, managers select out the least able workers, implying that the mean increases but the dispersion may decrease. In our field experiment we find that the introduction of managerial performance pay raises both the mean and dispersion of worker productivity. Analysis of individual level productivity data shows that managers target their effort towards high ability workers, and the least able workers are less likely to be selected into employment. These results highlight the interplay between the provision of managerial incentives and earnings inequality among lower-tier workers.

John A List

Cited by*: 16 Downloads*: 19

Public policy decision making often requires balancing the benefits of a policy with the costs. While regulators in the United States and abroad rely heavily on benefit-cost analysis, critics contend that hypothetical bias precludes one of the most popular benefit estimation techniques--contingent surveys--from providing reliable economic values for nonmarket goods and services. This paper explores a new methodology to obtain the total value of nonmarket goods and services--random nth price auctions. The empirical work revolves around examining behavior of 360 participants in a competitive marketplace, where subjects naturally buy, sell, and trade commodities. The field experiment provides some preliminary evidence that hypothetical random nth price auctions can, in certain situations, reveal demand truthfully.

John A List, Warren McHone , Daniel L Millimet

Cited by*: 11 Downloads*: 19

Whether environmental regulations alter capital flows remains a hotly debated issue. This paper uses county-level data to examine the location decisions of domestic and foreign firms in a single empirical model and tests for asymmetries by firm origin in the degree to which capital flows are influenced by environmental standards. We find that while domestic firms are influenced by environmental regulations, foreign firms are not. Since the benefits of foreign investment are well-documented-foreign plants typically provide more jobs and increase local wages by more than domestic plants-this result suggests a double-dividend is available: foreign plants provide an economic stimulus and are not unduly influenced by environmental protections.

Michael Kremer, Edward Miguel

Cited by*: 16 Downloads*: 19

We examine social learning using data from a program that promoted use of deworming medicine in Kenyan schools. These drugs kill worms in the body; although people are soon reinfected, treatment interferes with the cycle of transmission, generating positive externalities. Individuals randomly exposed to more information about deworming drugs through their social network were significantly less likely to take the drugs and more likely to believe the drugs are "not effective." This finding is consistent with the hypothesis that those exposed to the program had overly optimistic prior beliefs about net private drug benefits. The combination of strong social effects and extensive social networks among teenagers implies that a "child-to-child" public health approach focused on teenagers will speed social learning. There are large differences between social effect estimates relying on experimental variation (negative estimates) and nonexperimental methods (positive estimates).

Glenn W Harrison

Cited by*: 5 Downloads*: 19

If we are to examine the role of "controls" in different experimental settings, it is appropriate that the word be defined carefully. The Oxford English Dictionary (Second Edition) defines the verb "control" in the following manner: "To exercise restraint or direction upon the free action of; to hold sway over, exercise power or authority over; to dominate, command." So the word means something more active and interventionist than is suggested by it's colloquial clinical usage. Control can include such mundane things as ensuring sterile equipment in a chemistry lab, to restrain the free flow of germs and unwanted particles that might contaminate some test.

Alan S Gerber, Donald P Green, Ron Shachar

Cited by*: 39 Downloads*: 19

Habit is a frequently mentioned but understudied cause of political action. This article provides the first direct test of the hypothesis that casting a ballot in one election increases one's propensity to go to the polls in the future. A field experiment involving 25,200 registered voters was conducted prior to the November general election of 1998. Subjects were randomly assigned to treatment conditions in which they were urged to vote through direct mail or face-to-face canvassing. Compared to a control group that received no contact, the treatment groups were significantly more likely to vote in 1998. The treatment groups were also significantly more likely to vote in local elections held in November of 1999. After deriving a statistical estimator to isolate the effect of habit, we find that, ceteris paribus, voting in one election substantially increases the likelihood of voting in the future. Indeed, the influence of past voting exceeds the effects of age and education reported in previous studies.

Nava Ashaf, Dean S Karlan, Wesley Yin

Cited by*: 110 Downloads*: 19

We designed a commitment savings product for a Philippine bank and implemented it using a randomized control methodology. The savings product was intended for individuals who want to commit now to restrict access to their savings, and who were sophisticated enough to engage in such a mechanism. We conducted a baseline survey on 1777 existing or former clients of a bank. One month later, we offered the commitment product to a randomly chosen subset of 710 clients; 202 (28.4 percent) accepted the offer and opened the account. In the baseline survey, we asked hypothetical time discounting questions. Women who exhibited a lower discount rate for future relative to current tradeoffs, and hence potentially have a preference for commitment, were indeed significantly more likely to open the commitment savings account. After twelve months, average savings balances increased by 81 percentage points for those clients assigned to the treatment group relative to those assigned to the control group. We conclude that the savings response represents a lasting change in savings, and not merely a short-term response to a new product.

Anya Samek, Roman Sheremeta

Cited by*: 0 Downloads*: 18

Recognizing donors by revealing their identities is important for increasing charitable giving. We conducted a field experiment to examine how different recognition methods impact giving, and found that all forms of recognition that we examined had a positive impact on increasing donations, whereby recognizing only highest donors (positive recognition) and recognizing only lowest donors (negative recognition) had the most pronounced effect. We argue that selective recognition (both positive and negative) creates tournament-like incentives. Recognizing the highest donors activates the desire to seek a positive prize of prestige, thus increasing the proportion of donors who contribute large amounts. Recognizing the lowest donors activates the desire to avoid a negative prize of shame, thus decreasing the proportion of donors who do not contribute or contribute very little. Therefore, selective recognition is an effective tool that can be used in the field by charities to increase donations.

Ginger Z Jin, Andrew Kato

Cited by*: 2 Downloads*: 18

Every new method of trade offers an opportunity for economic agents to compare its costs and benefits relative to the status quo. Such comparison motivates sorting across market segments and reshapes the whole marketplace. The Internet provides an excellent example: it introduces substantial search cost savings over brick and mortar retail stores but imposes new obstacles for sellers to convey quality. Using sports card trading as a case study, we provide empirical evidence on (1) the sorting of product quality between the online and offline segments, (2) the changes for retail outlets after the Internet came into place, and (3) how supporting industries such as professional grading and card manufacturing adapted to take advantage of the new market.

Mirco Tonin, Michael Vlassopoulos

Cited by*: 3 Downloads*: 18

This paper presents evidence from a field experiment, which aims to identify the two sources of workers' pro-social motivation that have been considered in the literature: action-oriented altruism and output-oriented altruism. To this end we employ an experimental design that first measures the level of effort exerted by student workers on a data entry task in an environment that elicits purely selfish behavior and we compare it to effort exerted in an environment that also induces action-oriented altruism. We then compare the latter to effort exerted in an environment where both types of altruistic preferences are elicited. We find that action-oriented altruism accounts for a significant increase in effort, while there is no additional impact due to output-oriented altruism. We also find significant gender-related differences in the treatment effect: women are very responsive to the treatment condition eliciting action-oriented altruism, while men's behavior is not affected by any of the treatments.

Laura Derksen, Adamson Muula, Joep van Oosterhout

Cited by*: 0 Downloads*: 18

The HIV epidemic in southern Africa has important consequences for economic development. The epidemic could be stopped by a universal test and treat policy, as antiretroviral drugs block the spread of the virus. However, demand for HIV testing and treatment are surprisingly low. This paper develops a model in which the decision to seek an HIV test is a signal of infection, and those who seek a test are subject to statistical discrimination from potential sexual partners. We evaluate an information experiment designed to test the theory, and find evidence that this form of discrimination is a significant barrier to HIV testing. In particular, we provide information at the community level on the public benefit of antiretroviral therapy: because the drugs prevent HIV transmission, a person who is tested and treated for HIV is a relatively safe sexual partner. This information reduces discrimination and increases HIV testing, with the strongest effects in communities where the new information becomes common knowledge. The results demonstrate that discrimination towards HIV positive individuals can be due to rational behavior by a misinformed public, and that providing new information can be an effective way to mitigate its effects.

Per Fredriksson , John A List, Daniel L Millimet

Cited by*: 33 Downloads*: 18

Previous studies have proposed that equilibrium capital flows are affected by environmental regulations-the commonly coined 'pollution haven' hypothesis. We revisit this issue by treating environmental policies as endogenous and allowing governmental corruption to influence foreign direct investment patterns. Via these two simple extensions, we are able to provide a much richer model of international capital flows. The theoretical model presumes that the effect of corruption on FDI operates via two channels: corruption affects capital flows through its impact on environmental policy stringency and due to greater theft of public funds earmarked for public spending. We empirically examine the implications of the model using US state-level panel data from four industrial sectors over the period 1977-1987. Empirical results suggest environmental policy and corruption both play a significant role in determining the spatial allocation of inbound US FDI. In addition, the estimated effect of environmental policy is found to depend critically on exogeneity assumptions.

Jay R Corrigan, Matthew C Rousu

Cited by*: 3 Downloads*: 18

Policymakers are considering including stricter standards in international trade agreements. Using auctions to assess preferences, we find that the median consumer places no premium on fair trade foods produced under more stringent labor and environmental standards. This indicates that current trade policies may be preferable to U.S. consumers.

Carina Cavalcanti, Andreas Leibbrandt

Cited by*: 0 Downloads*: 18

This paper investigates the role of dry promotions for community participation in eight Brazilian fishing villages. We randomly promoted some fishermen to assistants before the start of an environmental program, increasing their responsibilities but not providing any monetary compensation. Thereafter, we study whether they engage more in conservation behavior during this program. The data shows that promoted fishermen provide substantially more effort, which suggests that such promotions my be a cost-effective tool to stimulate cooperation and community participation.

Armin Falk

Cited by*: 8 Downloads*: 17

This study reports data from a field experiment that was conducted to investigate the relevance of gift-exchange for charitable giving. Roughly 10,000 solicitation letters were sent to potential donors in the experiment. One third of the letters contained no gift, one third contained a small gift and one third contained a large gift. Whether a potential donor received a letter with or without a gift was randomly determined. We observe strong and systematic effects from including gifts. Compared to the no gift condition, the relative frequency of donations increased by 17 percent if a small gift was included and by 75 percent for a large gift. Consequently, including gifts was highly profitable for the charitable organization. The contribution of this paper is twofold: first, it shows that gift-exchange is important for charitable giving, in addition to the warm-glow motive. Second, the paper confirms the economic relevance of reciprocity by using field data. This extends the current body of research on reciprocity, which is almost exclusively confined to laboratory studies.

Francisco Galarza

Cited by*: 20 Downloads*: 17

This paper estimates the risk preferences of cotton farmers in Southern Peru, using the results from a multiple-price-list lottery game. Assuming that preferences conform to two of the leading models of decision under risk--Expected Utility Theory (EUT) and Cumulative Prospect Theory (CPT)--we find strong evidence of moderate risk aversion. Once we include individual characteristics in the estimation of risk parameters, we observe that farmers use subjective nonlinear probability weighting, a behavior consistent with CPT. Interestingly, when we allow for preference heterogeneity via the estimation of mixture models--where the proportion of subjects who behave according to EUT or to CPT is endogenously determined--we find that the majority of farmers' choices are best explained by CPT. We further hypothesize that the multiple switching behavior observed in our sample can be explained by nonlinear probability weighting made in a context of large random calculation mistakes; the evidence found on this regard is mixed. Finally, we find that attaining higher education is the single most important individual characteristic correlated with risk preferences, a result that suggests a connection between cognitive abilities and behavior towards risk.