The motivation to incorporate aspects of a partner's identity into your own identity is a central feature of __________.

A) self-expansion
B) self-esteem
C) self-reflection
D) self-review

Self-expansion theory explains that individuals have a basic motivation to expand the resources of the self, and incorporation of aspects of a partner's identity into one's own identity is one way of achieving this expansion. Self-esteem, self-reflection, and self-review may be related concepts, but they do not directly address the incorporation of a partner's identity.