Cass identity model

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The Cass identity model is one of the fundamental theories of LGBT identity development, developed in 1979 by Vivienne Cass.^[1] This model was one of the first to treat LGBT people as normal in a heterosexist society and in a climate of homophobia and biphobia instead of treating homosexuality and bisexuality themselves as a problem. Cass described a process of six stages of LGBT identity development. While these stages are sequential, some people might revisit stages at different points in their lives.