Ritualization increases the perceived efficacy of instrumental actions.

Across all cultures, people frequently engage in ritualized (non-instrumental) behaviors. How do those causally opaque actions affect perceptions of causal efficacy? Using real-life stimuli extracted from NCAA basketball games, we asked fans, players of the game, and subjects naive to the game to predict the outcome of free throw attempts. We found that the performance of personal pre-shot rituals increased the perception of shot efficacy irrespective of subjects' level of knowledge of and involvement in the game.

The Stance Leads the Dance: The Emergence of Role in a Joint Supra-Postural Task.

Successfully meeting a shared goal usually requires co-actors to adopt complementary roles. However, in many cases, who adopts what role is not explicitly predetermined, but instead emerges as a consequence of the differences in the individual abilities and constraints imposed upon each actor. Perhaps the most basic of roles are and .