Sexual selection is a key component of evolutionary biology. However, from the very
formulation of sexual selection by Darwin, the nature and extent of sexual selection have …

During the latter half of the last century, evidence of reproductive competition between males
and male selection by females led to the development of a stereotypical view of sex …

In nature, both males and females engage in competitive aggressive interactions to resolve
social conflicts, yet the behavioral principles guiding such interactions and their underlying …

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

Social integration and support can have profound effects on human survival. The extent of
this phenomenon in non-human animals is largely unknown, but such knowledge is …

Color is a ubiquitous perceptual stimulus, yet relatively little empirical and even less
theoretical work exists on color and psychological functioning. The research that has been …

In humans and obligatory social animals, individuals with weak social ties experience
negative health and fitness consequences. The social buffering hypothesis conceptualizes …

When Darwin proposed that females shape evolution by being choosy in their choice of
male suitors, his Victorian contemporaries were shocked that he accorded so much …

In spite of recent interest in sexual selection in females, debate exists over whether traits that
influence female–female competition are sexually selected. This review uses female–female …

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 …