Gender-nonconforming children, on the other hand, will feel different from children of their own sex.

In either case, this feeling of difference may evoke physiological arousal when the child is near members of the sex which it considers as being "different", which will later be transformed into sexual arousal.

Since opportunity is clearly socially structured, the expectation is that social influences should be stronger for behavior than attraction.

The study, including approximately three times as many people as the previous largest study on this subject, indicates that it is significantly more statistically reliable.

The study of the environment and sexual orientation is research into possible environmental influences on the development of human sexual orientation.

Some researchers distinguish environmental influences from hormonal influences, Often, sexual orientation and sexual orientation identity are not distinguished, which can impact accurately assessing sexual identity and whether or not sexual orientation is able to change; sexual orientation identity can change throughout an individual's life, and may or may not align with biological sex, sexual behavior or actual sexual orientation.

The proportion of adolescents reporting same-sex attraction is significantly higher than the proportion reporting same-sex sexual experience.

In addition to attraction, opportunity has to present itself.