Fischbacher,U.
Hertwig,R.
Bruhin,A.

We investigate what processes may underlie heterogeneity in social preferences. We address this question by examining participants’decisions and associated response times across 12 mini-ultimatum games. Using afinite mixture model and cross-validating its classification with a response time analysis, we identified four groups of responders: one group takes little to no account of the proposed split or the foregone allocation and swiftly accepts any positive offer; two groups process primarily the objective properties of the allocations (fairness and kindness) and need more time the more properties need to be examined; and a fourth group, which takes more time than the others, appears to take into account what they would have proposed had they been put in the role of the proposer. We discuss implications of this joint decision–response time analysis.

Fischbacher, U., Hertwig, R., & Bruhin, A. (2013). How to model heterogeneity in costly punishment: Insights from responders' response times. Journal of Behavioral Decision Making, 26, 462-476. doi:10.1002/bdm.1779 (Full text)

Publication year	2013
Document type:	Article
Publication status:	Published
External URL:	http://dx.doi.org/10.1002/bdm.1779 View
Categories:
Keywords:	altruistic punishmentfinite mixture modelheterogeneityheuristicsresponse timeultimatum game