self-schema self-reference self-concept who am I? the substantial nature of a person which endures and unifies consciousness over time independent self interdependent self Me versus I knowledge about us self-awareness self-consciousness self-discrepancy personality traits physical characteristics ventromedial prefrontal cortex knowledge that we exist as individuals social group memberships self-complexity self-clarity somatosensory component agentive component narrative component social component ideal self self-esteem self-perception self-reflection values goals identity