Whose self is it anyway? Self-aspect control moderates the relation between self-complexity and well-being

Greater self-complexity refers to the extent that one's self-concept is comprised of many and relatively differentiated self-aspects. Although some research has found that those greater in self-complexity fare better physically (e.g., fewer illnesses) and psychologically (e.g., less depression) when experiencing stress, other studies have reported another pattern of data (e.g., greater self-complexity predicts greater depression). In the current work, two studies found support for a moderating variable in this latter pattern, self-aspect control. Specifically, for those who perceived relatively little control over their self-aspects, being greater in self-complexity predicted worse physical and psychological outcomes. Study 2 tested alternative explanations and supported an interpretation that perceptions of control over one's multiple selves, in particular, moderated the relation between self-complexity and well-being.