This document discusses the concept of self-concept. It provides a brief history, noting that William James in 1890 distinguished between the subjective sense of self ("I") and objective sense ("me"). Self-concept is then defined as the totality of an individual's thoughts and feelings about themselves. The cognitive, affective, and behavioral components of self-concept are introduced. Eastern and Western cultural perspectives on the self are contrasted. The document also discusses how the looking-glass self and cognitive dissonance theory relate to threats to self-concept.