Related Experiment Video
Updated: Apr 26, 2026

The Collective Trust Game: An Online Group Adaptation of the Trust Game Based on the HoneyComb Paradigm
Published on: October 20, 2022
The effects of within- and between-group competition on trust and trustworthiness among acquaintances
Guofang Liu1, Chongde Lin2, Ziqiang Xin3
1Institute of Developmental Psychology, Beijing Normal University, Beijing, P. R. China; School of Psychology, Beijing Normal University, Beijing, P. R. China.
Abstract:
Several studies have indicated that between-group competition is a key stimulator of trust and trustworthiness. Another important but neglected type of competition may also affect trust and trustworthiness: within-group competition, especially competition among acquaintances. The present study investigated the effects of both within- and between-group competition on trust and trustworthiness, which were measured using an investment game played by acquaintances. We found that, compared to the participants' performance in the non-competition condition, when individuals were motivated to compete with their in-group members or the other groups for financial rewards, they demonstrated more trust. When individuals were motivated to compete with their in-group members, they exhibited lower trustworthiness than in non-competition and between-group competition. In addition, within-group competition decreased the trustor's payoff while both within- and between- group competition increased the trustee's payoff. Finally, we found that males trusted their group members more than females.
More Related Videos
11:51Combining Behavioral Endocrinology and Experimental Economics: Testosterone and Social Decision Making
Published on: March 2, 2011
08:24The Joint Effect of Social Comparison and Social Distance on Evaluation of Intertemporal Choice Outcomes in Event-related Potential Studies
Published on: August 25, 2023
Related Concept Videos
Impact of Groups on Groups
Robbers Cave
In- and Out-Groups
Trait Centrality
Strategies of Self-Presentation I: Strategic Self-Presentation
Social Proof