DEVELOPMENT OF BISEXUALITY IN MALE RAT TREATED NEONATALLY WITH ANDROSTENEDIONE

Presented experimental evidence that androstenedione (DELTA4) is not the androgen responsible for normal male psychosexual development. The presence of this androgen alone during early postnatal development permits the establishment of a marked bisexual organization. 17 male rats were castrated at birth; 10 were given no hormone treatment, and 7 were treated during the next 20 days of life with DELTA4. Treated Ss not only retained the ability to display lordosis behavior in adulthood but also developed the behaviors of intromission and ejaculation and normal accessory reproductive organs. (18 ref.) (PsycINFO Database Record (c) 2006 APA, all rights reserved). © 1969 American Psychological Association.