Which type of group contingency capitalizes least on positive peer pressure?

The type of group contingency that capitalizes least on positive peer pressure is the independent group contingency. In this model, each individual is rewarded based on their own performance rather than the performance of the group as a whole. This means that each person has an opportunity to earn reinforcement based solely on their individual efforts, which can diminish the influence of peer pressure.

In contrast, both dependent and interdependent group contingencies rely significantly on the group's collective effort. In a dependent contingency, the group rewards are based on the performance of one individual, which can heighten peer motivation as others might encourage that individual to perform well. An interdependent contingency requires all members of the group to work together and reach a certain standard to receive reinforcement, thereby creating a strong influence of positive peer pressure as everyone is collectively invested in each other's success.

Task-based contingencies are sometimes designed for specific tasks but can also incorporate elements of group dynamics, drawing on teamwork, which enhances the potential for positive peer pressure. Thus, the independent group contingency stands out for its focus on individual performance, minimizing the impact of peer influence compared to the other models.