Original Research ARTICLE
Model-Based and Model-Free Social Cognition: Investigating the role of habit in social attitude formation and choice
- 1University of Southern California, United States
- 2New York University, United States
- 3University of Amsterdam, Netherlands
- 4Psychology, New York University, United States
Do habits play a role in our social impressions? To investigate the contribution of habits to the formation of social attitudes, we examined the roles of model-free and model-based reinforcement learning in social interactions—computations linked in past work to habit and planning, respectively. Participants in this study learned about novel individuals in a sequential reinforcement learning paradigm, choosing financial advisors who led them to high- or low-paying stocks. Results indicated that participants relied on both model-based and model-free learning, such that each type of learning was expressed in both advisor choices and post-task self-reported liking of advisors. Specifically, participants preferred advisors who could provide large future rewards as well as advisors who had provided them with large rewards in the past. Although participants relied more heavily on model-based learning overall, they varied in their use of model-based and model-free learning strategies, and this individual difference influenced the way in which learning related to self-reported attitudes: among participants who relied more on model-free learning, model-free social learning related more to post-task attitudes. We discuss implications for attitudes, trait impressions, and social behavior, as well as the role of habits in a memory systems model of social cognition.
Keywords: social, Cognition, Attitude, Learning, habit, Model-free, model-based, computational
Received: 20 May 2019;
Accepted: 31 Oct 2019.
Copyright: © 2019 Hackel, Berg, Lindström and Amodio. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Dr. David M. Amodio, New York University, Psychology, New York City, United States, firstname.lastname@example.org