I characterize two approaches to the study of human creativity as based on the principle of Belief and Performance, respectively. Employing notions developed in the Social Sciences,I scrutinize the strengths and wealmesses of these approaches for selected problems in the theory of creativity. I look for common links between these approaches, and sketch a framework for their future interaction. The text is structured in terms of six claims, discussed from general to specific. To support one of the claims, I briefly discuss an example of my own research in computational psychomusicology.