BACKGROUND Whereas early studies of animal evolution focused principally on the
adaptations of different species to their physical environment, more recent studies have …

The demographic success of humans compared with other closely related species can be
attributed to the relatively rapid pace of reproduction and improved chances of survival. The …

Relationship, connection, and engagement have emerged as key values in recent studies of
human–animal relations. In this article, I call for a reexamination of the productive aspects of …

Various approaches have been developed to evaluate the consequences of spatial structure
on evolution in subdivided populations. This book is both a review and new synthesis of …

Since Hamilton published his seminal papers in 1964, our understanding of the importance
of cooperation for life on Earth has evolved beyond recognition. Early research was focused …

Cooperation is fundamental to human societies and widespread among animals, yet
explaining how cooperative relationships persist without one party exploiting another …

Because children's ability to support themselves falls below their consumption, human
young are subsidized by others throughout much of their growth and development. Mothers …

Hamilton's inclusive fitness theory represents one of the most important developments in
evolutionary biology. In particular, the idea that individuals benefit from the reproduction of …

Behavioural innovations may have far-reaching evolutionary and ecological consequences,
allowing individuals to obtain new resources and cope with environmental change …

Social approach is crucial for establishing relationships among individuals. In rodents, social
approach has been studied primarily within the context of behavioral phenomena related to …