Ecology Letters (2011) 14: 1300–1312 Abstract We review recent work at the interface of
economic game theory and evolutionary biology that provides new insights into the …

Male facial width-to-height ratio (bizygomatic width scaled for face height) is a testosterone-
linked trait predictive of reactive aggression, exploitative behavior, cheating, deception, and …

Specialized signals emitted by competing males often convey honest information about
fighting ability. It is generally believed that receivers use these signals to directly assess their …

Third party punishment can be evolutionarily stable if there is heterogeneity in the cost of
punishment or if punishers receive a reputational benefit from their actions. A dominant …

“Moralistic” punishment of free riders can provide a beneficial reputation, but the immediate
behavior is costly to the punisher. In Study 1, we investigated whether variation in status …

Our understanding of animal communication has been largely driven by advances in theory
since empirical evidence has been difficult to obtain. Costly signaling theory became the …

The present article aims to propose a theoretical discussion regarding the role of lying
based upon the Evolutionary Psychology perspective by shedding a new light on the main …

Contests between conspecific males are an important method of establishing mating rights
or territories, yet the potential costs of injuries are high. To reduce potential risks, males can …

Sex differences in animal ornamentation are thought largely genetically fixed due to stronger
sexual selection on males of species with conventional sex roles. But, other types of sex …

Many animals minimize the costs of aggressive conflict by using conventional signals of
agonistic ability to assess rivals prior to interacting. Conventional signals are a subset of …