For decades, the APA has not considered homosexuality a psychological disorder, while other professionals in the field consider it to be a "gender-identity" problem. But the new statement, which appears in a brochure called "Answers to Your Questions for a Better Understanding of Sexual Orientation & Homosexuality," states the following:
"There is no consensus among scientists about the exact reasons that an individual develops a heterosexual, bisexual, gay or lesbian orientation. Although much research has examined the possible genetic, hormonal, developmental, social, and cultural influences on sexual orientation, no findings have emerged that permit scientists to conclude that sexual orientation is determined by any particular factor or factors. Many think that nature and nurture both play complex roles...."
That contrasts with the APA's statement in 1998: "There is considerable recent evidence to suggest that biology, including genetic or inborn hormonal factors, play a significant role in a person's sexuality." (more)