Humans and non-human primates share an elemental quantification system that resides in a
dedicated neural network in the parietal and frontal lobes. In this cortical network,'number …

Evolution selects for traits that are of adaptive value and increase the fitness of an individual
or population. Numerical competence, the ability to estimate and process the number of …

Observations of chimpanzees (Pan troglodytes) and bonobos (Pan paniscus) provide
valuable comparative data for understanding the significance of conspecific killing. Two …

A powerful and provocative exploration of how war has changed our society—for the better."
War!..../What is it good for?/Absolutely nothing," says the famous song—but archaeology …

Evolutionary anthropologists seek to understand the evolution of warfare across multiple
timescales, from the roots of warfare in the intergroup aggression of our primate ancestors …

Conflict with conspecifics from neighbouring groups over territory, mating opportunities and
other resources is observed in many social organisms, including humans. Here we …

“Sense of number” refers to the classical idea that we perceive the number of items
(numerosity) intuitively. However, whether the brain signals numerosity spontaneously, in …

Conflict can profoundly affect individuals and their groups. Oftentimes, conflict involves a
clash between one side seeking change and increased gains through victory and the other …

Abstract Knowledge of characteristics that promote group success during intraspecific
encounters is key to understanding the adaptive advantages of sociality for many group …

I review the theoretical and experimental literature on the collective action problem in groups
whose members differ in various characteristics affecting individual costs, benefits and …