Papers - Artefactual

David J Cooper, John H Kagel, Qing Liang Gu, Wei Lo

Cited by*: 41 Downloads*: 13

We examine strategic interactions between firms and planners in China, comparing behavior between: (i) students and managers with field experience with this situation, (ii) standard versus increased monetary incentives, and (iii) sessions conducted "in context", making explicit reference to interactions between planners and managers, and those without any such references. The dynamics of play are similar across treatments with play only gradually, and incompletely, converging on a pooling equilibrium. A fivefold increase in incentives significantly increases initial levels of strategic play. Games played in context generated greater levels of strategic play for managers, with minimal impact on students.

Juan-Camilo Cardenas, Elinor Ostrom

Cited by*: 40 Downloads*: 34

The study of collective action requires an understanding of the individual incentives and of the institutional constraints that guide people in making choices about cooperating or defecting on the group facing the dilemma. The use of local ecosystems by groups of individuals is just one example where individual extraction increases well-being, but aggregate extraction decreases it. The use of economic experiments has enhanced the already diverse knowledge from theoretical and field sources of when and how groups can solve the problem through selfgoverning mechanisms. These studies have identified several factors that promote and limit collective action, associated with the nature of the production system that allows groups to benefit from a joint-access local ecosystem, and associated with the institutional incentives and constraints from both self-governed and externally imposed rules. In general, there is widespread agreement that cooperation can happen and be chosen by individuals as a rational strategy, beyond the "tragedy of the commons" prediction. A first step in this paper is to propose a set of layers of information that the individuals might be using to decide over their level of cooperation. The layers range from the material incentives that the specific production function imposes, to the dynamics of the game, to the composition of the group and the individual characteristics of the player. We next expand the experimental literature by analyzing data from a set of experiments conducted in the field with actual ecosystem users in three rural villages of Colombia using this framework. We find that repetition brings reciprocity motives into the decision making. Further, prior experience of the participants, their perception of external regulation, or the composition of the group in terms of their wealth and social position in the village, influence decisions to cooperate or defect in the experiment. The results suggest that understanding the multiple levels of the game, in terms of the incentives, the group and individual characteristics or the context, can help understand and therefore explore the potentials for solving the collective-action dilemma.

Steven D Levitt, John A List

Cited by*: 38 Downloads*: 65

No abstract available

Andreas Lange, John A List, Michael K Price

Cited by*: 35 Downloads*: 33

This study explores the economics of charitable fund-raising. We begin by developing theory that examines the optimal lottery design while explicitly relaxing both risk-neutrality and preference homogeneity assumptions. We test our theory using a battery of experimental treatments and find that our theoretical predictions are largely confirmed. Specifically, we find that single and multiple prize lotteries dominate the voluntary contribution mechanism both in total dollars raised and the number of contributors attracted. Moreover, we find that the optimal fund-raising mechanism depends critically on the risk postures of potential contributors and preference heterogeneity.

Bradley J Ruffle, Richard Sosis

Cited by*: 35 Downloads*: 51

The in-group-out-group bias is among the most widely documented and analyzed phenomenon in the social sciences. We conduct field experiments to test whether the bias extends to the cooperative behavior of one of the most successful modern collectives, the Israeli kibbutz. Despite their promise as universal cooperators, kibbutz members are more cooperative toward anonymous kibbutz members than they are toward anonymous city residents. In fact, when paired with city residents, kibbutz members' observed levels of cooperation are identical to those of city residents. Moreover, self-selection rather than kibbutz socialization largely accounts for the extent to which kibbutz members are cooperative.

Eric Bettinger, Robert Slonim

Cited by*: 33 Downloads*: 65

Recent policy initiatives offer cash payments to children (and often their families) to induce better health and educational choices. These policies implicitly assume that children are especially impatient (i.e., have high discount rates); however, little is known about the nature of children's patience, how it varies across children, and whether children can even make rational intertemporal choices. This paper examines the inter-temporal choices of five to sixteen year old children in an artefactual field experiment. We examine their choices between varying levels of compensation received in two or four months in the future and in zero or two months in the future. We find that children's choices are consistent with hyperbolic discounting, boys are less patient than girls, older children are more patient and that mathematical achievement test scores, private schooling and parent's patience are not correlated with children's patience. We also find that although more than 25 percent of children do not make rational inter-temporal choices within a single two-period time frame, we cannot find variables that explain this behavior other than age and standardized mathematical achievement test scores.

John A List, Azeem M Shaikh, Yang Xu

Cited by*: 33 Downloads*: 278

Empiricism in the sciences allows us to test theories, formulate optimal policies, and learn how the world works. In this manner, it is critical that our empirical work provides accurate conclusions about underlying data patterns. False positives represent an especially important problem, as vast public and private resources can be misguided if we base decisions on false discovery. This study explores one especially pernicious influence on false positives-multiple hypothesis testing (MHT). While MHT potentially affects all types of empirical work, we consider three common scenarios where MHT influences inference within experimental economics: jointly identifying treatment effects for a set of outcomes, estimating heterogenous treatment effects through subgroup analysis, and conducting hypothesis testing for multiple treatment conditions. Building upon the work of Romano and Wolf (2010), we present a correction procedure that incorporates the three scenarios, and illustrate the improvement in power by comparing our results with those obtained by the classic studies due to Bonferroni (1935) and Holm (1979). Importantly, under weak assumptions, our testing procedure asymptotically controls the familywise error rate - the probability of one false rejection - and is asymptotically balanced. We showcase our approach by revisiting the data reported in Karlan and List (2007), to deepen our understanding of why people give to charitable causes.

Joseph Henrich, Richard McElreath

Cited by*: 32 Downloads*: 33

Evidence shows that real-effort investments can affect bilateral bargaining outcomes. This paper investigates whether similar investments can inhibit equilibrium convergence of experimental markets. In one treatment, sellers' relative effort affects the allocation of production costs, but a random productivity shock ensures that the allocation is not necessarily equitable. In another treatment, sellers' effort increases the buyers' valuation of a good. We find that effort investments have a short-lived impact on trading behavior when sellers' effort benefits buyers, but no effect when effort determines cost allocation. Efficiency rates are high and do not differ across treatments.

Cannon Koo, John A List, Michael Margolis, Jason F Shogren

Cited by*: 31 Downloads*: 9

Second-price auctions are designed to induce people to reveal their private preferences for a good. Laboratory evidence suggests that while these auctions do a reasonable job on aggregate, they fall short at the individual level, especially for bidders who are off-margin of the market-clearing price. Herein we introduce and explore whether a random nth-price auction can engage all bidders to bid sincerely. Our results first show that the random nth-price auction can induce sincere bidding in theory and practice. We then compare the random nth-price to the second-price auction. We find that the second-price auction works better on-margin, and the random nth-price auction works better off-margin.

Glenn W Harrison, Morten I Lau, Elisabet E Rutstrom, Melonie B Williams

Cited by*: 29 Downloads*: 303

We design experiments to jointly elicit risk and time preferences for the adult Danish population. The experimental procedures build on laboratory experiments that have been evaluated using traditional subject pools. The field experiments utilize field sampling designs that we developed, and procedures that were chosen to be relatively transparent in the field with non-standard subject pools. Our overall design was also intended to be a general template for such field experiments in other countries. We examine the characterization of risk over a wider domain for each subject than previous experiments, allowing more precise estimates of risk attitudes. We also examine individual discount rates over six time horizons, as the first stage in a panel experiment in which we revisit subjects to test consistency and stability of responses over time. Risk and time preferences are heterogeneous, varying by observable individual characteristics. On a methodological level, we implement a refinement of existing procedures which elicits much more precise estimates, and also mitigates framing effects.

Bradley J Ruffle, Richard Sosis

Cited by*: 24 Downloads*: 13

No abstract available

Robert Berrens , Alok Bohara, Joe Kerkvliet, John A List

Cited by*: 22 Downloads*: 1

n/a

Juan-Camilo Cardenas

Cited by*: 21 Downloads*: 33

Many forest ecosystems provide multiple goods and services to both local users (e.g. firewood, water) and to other external beneficiaries (biodiversity conservation, carbon sequestration). This calls for alternative approaches in the governance of these local ecosystems. Even if local users solve the commons dilemma they face regarding the optimal provision of the direct benefit, there might still be a need for introducing mechanisms that also address the externality that involves those outside of the group. This paper addresses the analysis of different types of mechanisms, endogenously emerged from groups vs. externally imposed to them, when facing the typical tragedy of the commons. During 2000_2002 we conducted a series of economic experiments in several rural communities in Colombia. The sub-set reported here of 53 sessions with 265 actual users of local ecosystems, were focused specifically on the effect of external and self-governing rules for inducing cooperative behavior within groups. A group extraction or 'commons' game was used to explore how rules, formal and informal, emerge and how individual behavior responds to regulatory mechanisms aimed at solving the dilemma. Three treatments were compared to a baseline design: Two external regulations (high and low penalties, and only 20% of the players monitored), and a self-governed system where individuals were allowed to have in each round a few minutes of non-binding face-to-face communication. Surprisingly, both external regulations generated very similar results regardless of the level of the penalty, and they induced behaviors very similar to those achieved by the self-governed treatment. The experimental results suggest that individuals do not seem to follow entirely the conventional economic prediction of a minimizer of expected costs of regulations against the benefits from over extracting the resource, and that humans can develop norms based on non-enforceable rules of cooperation. Instead, other elements related to social norms and subjective valuation of the benefits and costs of the regulations might be in play.

Werner Guth, Carsten Schmidt, Matthias Sutter

Cited by*: 21 Downloads*: 21

On 11 May 2001, readers of the Berliner Zeitung were invited to participate in an ultimatum bargaining experiment played in the strategy vector mode: each participant chooses not only how much (s)he demands of the DM1,000 pie but also which of the nine possible offers of DM100, 200, ..., 900 (s)he would accept or reject. In addition, participants were asked to predict the most frequent type of behavior. Three randomly selected proposer-responder pairs were rewarded according to the rules of ultimatum bargaining and three randomly chosen participants of those who predicted the most frequent type of behavior received a prize of DM500. Decisions could be submitted by mail, fax or via the internet. Behavior is described, statistically analyzed and compared to the usual laboratory ultimatum bargaining results.

Matthias Sutter

Cited by*: 20 Downloads*: 46

Economic decisions depend on both actual outcomes as well as perceived intentions. In this paper, we examine whether and how the relative importance of outcomes or intentions for economic decisions develops with age. We report the results of ultimatum games with children, teens and university students. We find that children and teens react systematically to perceived intentions, like university students do. However, children and teens reject unequal offers much more often than university students, indicating that outcomes are relatively more important than intentions for younger subjects. Hence, the relative importance of intentions increases with age.

Rene Bekkers

Cited by*: 20 Downloads*: 112

A field study of altruistic behaviour is presented using a modification of the dictator game in a large random sample survey in the Netherlands (n=1,964). In line with laboratory experiments, only 5.7% donated money. In line with other survey research on giving, generosity increased with age, education, income, trust, and prosocial value orientation.

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.

Laura Schechter

Cited by*: 20 Downloads*: 25

Play in the traditional trust experiment depends both on trust beliefs and on levels of risk aversion. We ran two experiments with a diverse set of subjects in fifteen villages of rural Paraguay, the traditional trust experiment and a new experiment measuring only risk aversion. We find that risk attitudes are highly predictive of play in the trust game. In addition, omitting risk aversion as a regressor in trust regressions signficiantly changes the coefficients of important explanatory variables such as gender and wealth. We also use data on income and bet choice to calculate players' coefficients of relative risk aversion.

Anya Samek, Roman Sheremeta

Cited by*: 19 Downloads*: 4

We experimentally investigate the impact of recognizing contributors on public good contributions. We vary recognizing all, highest or lowest contributors. Consistent with previous studies, recognizing all contributors significantly increases contributions relative to the baseline. Recognizing only the highest contributors does not increase contributions compared to not recognizing contributors, while recognizing only the lowest contributors is as effective as recognizing all contributors. These findings support our conjecture that aversion from shame is a more powerful motivator for giving than anticipation of prestige.

Craig E Landry, Andreas Lange, John A List, Michael K Price, Nicholas G Rupp

Cited by*: 18 Downloads*: 17

This study develops theory and conducts an experiment to provide an understanding of why people initially give to charities, why they remain committed to the cause, and what factors attenuate these influences. Using an experimental design that links donations across distinct treatments separated in time, we present several insights. For example, we find that previous donors are more likely to give, and contribute more, than donors asked to contribute for the first time. Yet, how these previous donors were acquired is critical: agents who are initially attracted by signals of charitable quality transmitted via an economic mechanism are much more likely to continue giving than agents who were initially attracted by non-mechanism factors.