We meta-analyzed the literature on the relationship between the length ratio of the second to
the fourth digit (2D: 4D), a putative negative correlate of prenatal testosterone (T) levels in …

Most attempts to identify biological underpinnings of gender identity and sexual orientation
in humans have investigated effects of sex steroids, so pivotal in the differentiation of the …

Cross-Cultural Analysis is the sequel to Culture's Consequences, the classic work published
by Geert Hofstede, one of the most influential management thinkers in today's times …

Female and male brains are different, thanks to hormones coursing through the brain before
birth. That's taught as fact in psychology textbooks, academic journals, and bestselling …

Endorsed by Geert Hofstede, the most-quoted author in the cross-cultural field, this is the
only book that explains the relationship between national culture and national differences in …

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 …

Clinical impressions suggest a different sexual profile between individuals with and without
Autism Spectrum Disorder (ASD). Little is presently known about the demographics of …

Few topics are as complex and controversial as human sexual orientation and gender
identity. These matters touch upon our most intimate thoughts and feelings, and help to …

We used self-reported direct finger measurements from 255,116 participants in a BBC
Internet survey to investigate the measurement of 2D: 4D ratios and their association with …

The ratio of the lengths of the second and fourth fingers (2D: 4D) may serve as a marker for
prenatal androgen signaling. Because people are typically unaware of their 2D: 4D, its use …