Blanchard's transsexualism typology is a proposed psychological typology of gender dysphoria, transsexualism, and fetishistic transvestism, created by Ray Blanchard through the 1980s and 1990s, building on the work of prior researchers, including his colleague Kurt Freund. Blanchard categorized trans women into two groups: homosexual transsexuals who are attracted exclusively to men, and who seek sex reassignment surgery because they are feminine in both behavior and appearance; and autogynephilic transsexuals who are sexually aroused at the idea of having a female body.