Research on testosterone-behavior relationships in humans is assessed in relation to a
version of the challenge hypothesis, originally proposed to account for testosterone …

We review the literature on aggression in women with an emphasis on laboratory
experimentation and hormonal and brain mechanisms. Women tend to engage in more …

Müssen Mädchen erst zur Frau erzogen werden? Sind Männer Produkte einer patriarchalen
Ideologie? Ist die Zweigeschlechtlichkeit eine Erfindung unserer Gesellschaft? Oder …

Sexual and asexual reproduction are found throughout the plant and animal kingdoms.
Asexual reproduction has its advantages, chief among which is that it does not require the …

Biological differences between men and women contribute to many sex-specific illnesses
and disorders. Historically, it was argued that such differences were largely, if not …

The antihero prevails in recent American drama television series. Characters such as
mobster kingpin Tony Soprano (The Sopranos), meth cook and gangster-in-the-making …

Games are poised for a major evolution, driven by growth in technical sophistication and
audience reach. Characters that create powerful social and emotional connections with …

The validity of evolutionary explanations of vocal sexual dimorphism hinges upon whether
or not individuals with more sexually dimorphic voices have higher reproductive success …

This paper presents a new perspective on the transition from early to middle childhood (ie,
human juvenility), investigated in an integrative evolutionary framework. Juvenility is a …

Aggression is a key component for social behaviour and can have an adaptive value or
deleterious consequences. Here, we review the role of sex-related differences in aggressive …