Project Hütter & Fiedler

The Research Group FOR 1410 was funded by the DFG from 2010 to 2017. All projects have been completed.

Decision quality as a function of the amount of information: Small sample versus large sample advantages in individuals and groups

This project investigates advantages of large and small samples of information on judgment and decision-making. There are numerous empirical phenomena that highlight the power and simple beauty of intuitive decisions based on minimal samples of information. However, those can be contrasted against equally prominent aggregation effects that highlight information gains through increasing sample size. The goal of the project is to investigate the boundary conditions for small-sample and large sample advantages on decision quality. Specifically, we intend to examine decision quality as a function of three types of information: In addition to the number of observations n, and the number of cues or attribute dimensions k, social decisions in groups and democratic settings also vary in the number j of persons (group members, consultants, advisers) who contribute knowledge and observations. From that framework we derive several hypotheses to be tested reaching from the individual influences of the three information types on judgment and decision-making, including their mediators and moderators, to their interactive effects.




Prof. Dr. Mandy Hütter

Social and Organizational Psychology, University of Tübingen

Tel.: +49 (0) 7071-29-72978

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Prof. Dr. Klaus Fiedler

Department of social psychology, University of Heidelberg

Tel.: +49 (0) 6221-54-7270

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Fabian Ache, M.Sc.

Social and Organizational Psychology, University of Tübingen

Tel.: +49 (0) 7071 29-78336

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Research groupPublicationsLabActivitiesSummer School 2015Small Group Meeting 2017