This document summarizes Cross's model of black identity development, known as nigrescence theory. It describes 5 stages: 1) Pre-encounter, characterized by low salience or stigma of black identity; 2) Encounter, where an event challenges pre-existing identity; 3) Immersion-Emersion, a period of transition where the individual rejects old identity and immerses in black culture; 4) Internalization, where the new identity is internalized; and 5) Internalization-Commitment, a sustained commitment to black identity. The model has been extended over time, including concepts of recycling through stages and the influence of Afrocentric perspectives.