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Payment scheme changes and effort Adjustment: The role of 2D:4D digit ratio
In: Journal of behavioral and experimental economics, Band 72, S. 86-94
ISSN: 2214-8043
Does Cognitive Reflection Relate to Preferences and Socio-Economic Outcomes?
In: Journal of political economy microeconomics
ISSN: 2832-9368
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Exposure to inequality may cause under-provision of public goods: Experimental evidence
In: Journal of behavioral and experimental economics, Band 92, S. 101679
ISSN: 2214-8043
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Working paper
Heterogeneous Motives in the Trust Game: A Tale of Two Roles
The Supplementary Material for this article can be found online at: http://journal.frontiersin.org/article/10.3389/fpsyg.2016.00728 ; Trustful and trustworthy behaviors have important externalities for the society. But what exactly drives people to behave in a trustful and trustworthy manner? Building on research suggesting that individuals' social preferences might be a common factor informing both behaviors, we study the impact of a set of different motives on individuals' choices in a dual-role Trust Game (TG). We employ data from a large-scale representative experiment (N = 774), where all subjects played both roles of a binary TG with real monetary incentives. Subjects' social motives were inferred using their decisions in a Dictator Game and a dual-role Ultimatum Game. Next to self-interest and strategic motives we consider preferences for altruism, spitefulness, egalitarianism, and efficiency. We demonstrate that there exists considerable heterogeneity in motives in the TG. Most importantly, among individuals who choose to trust as trustors, social motives can differ dramatically as there is a non-negligible proportion of them who seem to act out of (strategic) self-interest whereas others are driven more by efficiency considerations. Subjects' elicited trustworthiness, however, can be used to infer such motivations: while the former are not trustworthy as trustees, the latter are. We discuss that research on trust can benefit from adding the second player's choice in TG designs. ; Financial support comes from the Spanish Ministry of Science and Innovation (ECO2010-17049), the Government of Andalusia Project for Excellence in Research (P07.SEJ.02547) and the Fundacion Ramón Areces R+D 2011. The publication of this article was funded by the Open Access Fund of the Leibniz Association.
BASE
Second-to-Fourth Digit Ratio Has a Non-Monotonic Impact on Altruism
Gene-culture co-evolution emphasizes the joint role of culture and genes for the emergence of altruistic and cooperative behaviors and behavioral genetics provides estimates of their relative importance. However, these approaches cannot assess which biological traits determine altruism or how. We analyze the association between altruism in adults and the exposure to prenatal sex hormones, using the second-to-fourth digit ratio. We find an inverted U-shaped relation for left and right hands, which is very consistent for men and less systematic for women. Subjects with both high and low digit ratios give less than individuals with intermediate digit ratios. We repeat the exercise with the same subjects seven months later and find a similar association, even though subjects' behavior differs the second time they play the game. We then construct proxies of the median digit ratio in the population (using more than 1000 different subjects), show that subjects' altruism decreases with the distance of their ratio to these proxies. These results provide direct evidence that prenatal events contribute to the variation of altruistic behavior and that the exposure to fetal hormones is one of the relevant biological factors. In addition, the findings suggest that there might be an optimal level of exposure to these hormones from social perspective. ; Financial support from the Spanish Ministry of Science and Innovation (ECO2010{17049; ECO2009-09120), the Government of Andalusia Project for Excellence in Research (P07.SEJ.02547), the Government of the Basque Country (IT-223–07) and Fundacion Ramon Areces (I+D-2011)is gratefully acknowledged.
BASE
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2d:4d and Self-Employment Using SOEP Data: A Replication Study
In: IZA Discussion Paper No. 13180
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Working paper
Adding household surveys to the behavioral economics toolbox: Insights from the SOEP Innovation Sample
Integrating economic experiments into household surveys provides unique possibilities. We introduce the German Socio-Economic Panel's Innovation Sample (SOEPIS), which offers researchers detailed panel data and the possibility to collect personalized experimental and survey data for free. We present the options that this provides and give examples illustrating these options.
Cognitive reflection and 2D:4D: Evidence from a large population sample
Bosch-Domènech et al. (2014) reported a negative association between 2D:4D, a suggested marker of prenatal testosterone exposure, and the Cognitive Reflection Test (CRT) in a sample of 623 university students. In this pre-registered study, we test whether we can replicate their findings in a general population sample of over 2,500 individuals from Germany. We find no statistically significant association between 2D:4D and the CRT in any of our primary hypothesis tests, or in any of our pre-registered exploratory analyses and robustness tests. The evidence is strong (based on the 99.5% confidence intervals in all three primary hypotheses tests) against effect sizes in the hypothesized direction larger than 0.075 CRT units (0.073 of the CRT standard deviation) for a one standard deviation change in 2D:4D.
Discounting Behavior in Problem Gambling
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