Ornaments, weapons and aggressive behaviours may evolve in female animals by mate
choice and intrasexual competition for mating opportunities—the standard forms of sexual …

For sexual selection to act on a given sex, there must exist variation in the reproductive
success of that sex as a result of differential access to mates or fertilisations. The …

Numerous researchers have examined the effects of skin condition, including texture and
color, on the perception of health, age, and attractiveness in human faces. They have …

The notion that men are more variable than women has become embedded into scientific
thinking. For mental traits like personality, greater male variability has been partly attributed …

Many conspicuous ornamental traits in animals are expressed in both males and females.
Despite this, most research has focused on sexually dimorphic ornamentation. Mutual …

Penguins, among the most delightful creatures in the world, are also among the most
vulnerable. The fragile status of most penguin populations today mirrors the troubled …

Skin blood perfusion and oxygenation depends upon cardiovascular, hormonal and
circulatory health in humans and provides socio-sexual signals of underlying physiology …

Papers on sexual selection often highlight the incredible diversity of sexually selected traits
across animals. Yet, few studies have tried to explain why this diversity evolved. Animals use …

Although the function of ornamental traits in males has been the focus of intensive research
for decades, expression of such traits in females has received much less study. Eastern …

In our daily lives, in our memories and fantasies, our mental worlds overflow with faces. But
what do we really know about this most remarkable feature of the human body? Why do we …