Ongoing political controversies around the world exemplify a long-standing and widespread
preoccupation with the acceptability of homosexuality. Nonheterosexual people have seen …

A key question concerns the extent to which sexual differentiation of human behavior is
influenced by sex hormones present during sensitive periods of development …

What causes a child to grow up gay or straight? Neuroscientist Simon LeVay summarizes a
wealth of scientific evidence that points to one inescapable conclusion: Sexual orientation …

Male and female fetuses differ in testosterone concentrations beginning as early as week 8
of gestation. This early hormone difference exerts permanent influences on brain …

Convincing evidence indicates that prenatal exposure to the gonadal hormone,
testosterone, influences the development of children's sex-typical toy and activity interests. In …

In Studying Human Behavior, Helen E. Longino enters into the complexities of human
behavioral research, a domain still dominated by the age-old debate of “nature versus …

Asexuality can be defined as an enduring lack of sexual attraction. Thus, asexual individuals
do not find (and perhaps never have) others sexually appealing. Some consider" asexuality" …

The complex process of sexual differentiation is known to be influenced by biological and
environmental determinants. The present review has the aim of summarizing the most …

Both sexual orientation and sex-typical childhood behaviors, such as toy, playmate and
activity preferences, show substantial sex differences, as well as substantial variability within …

There is now compelling evidence that the ratio of the length of the second digit divided by
the length of the fourth digit (2D: 4D) is affected by prenatal androgens in humans. This ratio …