This paper develops a conception of personal identity for Amartya Sen’s capability framework that emphasizes his self-scrutinizing aspect of the self and related concept of commitment, and compares this conception to the collective intentionality-based one advanced in Davis (2003c). The paper also distinguishes personal identity and social identity, and contrasts Sen’s framework with recent standard economics’ explanation of social identity in terms of conformity. Sen’s concept of commitment is examined in two formulations, and the later version is related to Bernard Williams’ thinking about identity-conferring commitments. The paper’s concludes by arguing that explaining personal identity as a special capability and possible object of soci...