The evolution of language has been investigated by several research communities,
including biologists and linguists, striving to highlight similar linguistic capacities across …

Thirty years on from the publication of Machiavellian Intelligence (Byrne & Whiten, 1988), it
is time to consider how the ideas in it have influenced understanding of the evolution of …

The behavioural, physiological, and energetic repercussions for wildlife that result from
changes in their soundscapes are increasingly being realized. To understand the effects of …

The Machiavellian intelligence hypothesis proposes that individuals in complex social
groups require sophisticated social cognition. This hypothesis has advanced our …

Depression and anxiety are some of the most prevalent and debilitating mental health
conditions in humans. They can present on their own or as co-morbidities with other …

Nonhuman primates host a variety of gastrointestinal parasites that infect individuals through
different transmission routes. Social contact among group members (eg, body contact …

Vocal communication is an essential aspect of primate social behaviour. The bearded
capuchin Sapajus libidinosus is endemic to Brazil, and some studies have described …

Objectives Human language represents an extreme form of communicative complexity.
Primate facial display complexity, which depends upon facial mobility, can be used as a …

The question of what has shaped primates'(and other species') cognitive capacities, whether
technical or social demands, remains a hot topic of inquiry. Indeed, a key area of study …

Ecological models of mating systems provide a theoretical framework to predict the effect of
the defendability of both breeding resources and mating partners on mating patterns. In …