Colour vision allows animals to reliably distinguish differences in the distributions of spectral
energies reaching the eye. Although not universal, a capacity for colour vision is sufficiently …

This paper reviews recent work on reciprocal altruism in primates with the aim of highlighting
the roles that reciprocal partner choice may have had in the evolution of primate altruism …

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 …

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

Cooperation beyond familial and group boundaries is core to the functioning of human
societies, yet its evolution remains unclear. To address this, we examined grooming …

China appears to have constrained transmission of COVID-19 outside of Hubei Provence
through rapid and intensive containment and mitigation interventions. Most countries only …

Cooperation between organisms can often be understood, like trade between merchants, as
a mutually beneficial exchange of services, resources or other 'commodities'. Mutual benefits …

In order for non‐kin altruism to evolve, altruists must receive fitness benefits for their actions
that outweigh the costs. Several researchers have suggested that altruism is a costly signal …

The general belief that cooperation and altruism in social groups result primarily from kin
selection has recently been challenged, not least because results from cooperatively …

Two factors that promote cooperation are partner choice and punishment of defectors, but
which option do people actually prefer to use? Punishment is predicted to be more common …