Aggression is a social behavior essential for securing resources and defending oneself and
family. Thanks to its indispensable function in competition and thus survival, aggression …

The effects of sex hormones on immune function have received much attention, especially
following the proposal of the immunocompetence handicap hypothesis. Many studies, both …

Sexual orientation typically describes people's sexual attractions or desires based on their
sex relative to that of a target. Despite its utility, it has been critiqued in part because it fails to …

Social organisation in animals takes many forms. It includes assemblages of territorial
animals, dominance hierarchies and social groups, among other things. The basic tenet that …

In species with separate sexes, females and males often differ in their morphology,
physiology and behaviour. Such sex‐specific traits are functionally linked to variation in …

Testosterone is often considered a critical regulator of aggressive behaviour. There is
castration/replacement evidence that testosterone indeed drives aggression in some …

Objectives Competition is related to psychophysiological stress responses and is a key
aspect of esports. Yet, while competition may indeed have an impact on performance, little is …

We review emerging research on the psychological and biological factors that underlie
social group formation, cooperation, and conflict in humans. Our aim is to integrate the …

Literature Cited to accompany Animal Communication, 2e Page 1 Principles of Animal
Communication, Second Edition Jack W. Bradbury and Sandra L. Vehrencamp Chapter 14 …

Although animal researchers established the role of testosterone as a 'social
hormone'decades ago, the investigation of its causal influence on human social behaviors …