Sex researcher Alfred Kinsey's vision of sexual taxonomy continued to evolv
e after he published his first landmark volume on human sexuality, and his
research into sexual subcultures went beyond his initial studies of homosex
uality and prostitution. In the late 1940s and early 1950s, he developed a
new interest in cross-dressing and cross-gender identification. This articl
e outlines how and why he began to interview transvestites and transsexuals
, and places his emerging vision of gendered behavior and gender identity w
ithin the scientific theories of his day. Kinsey rejected the prevailing vi
ews, preferring instead a behaviorist model of gender. He saw cross-dressin
g and crossgender identification as male phenomena and used them to specula
te about sex differences in the capacity for psychological conditioning. In
his usual style, he did not condemn transvestites or transsexuals, but he
disapproved of the genital surgery requested by male-to-female transsexuals
. It was here that Kinsey hit the limits of his well-known sexual liberalis
m in which he approved of all sexual variations that did not involve coerci
on.