The use of concepts underlies the most basic cognitive processes. Consequently, psychologists have long been interested in understanding the behavioral and neural correlates of conceptual knowledge and its manipulation. This has led to a rich set of research results that…

To investigate the influence of input from fellow group members in a constrained decision-making context, we develop four 2-armed bandit tasks in which subjects freely select one of two options (A or B) and are informed of the resulting reward…