Glossary Adaptation A genetically controlled trait that has evolved by natural selection. Analogous traits Similar traits that evolved independently in different species in response to similar environmental pressures. Comparative psychology The study of mind and behavior in nonhuman animals. Convergent evolution The process by which natural selection produces similar adaptations in different sp...

In this article, we integrate cultural evolutionary theory with empirical research from developmental psychology, anthropology, and primatology to explore the role of peer learning in development complex instrumental skills behavioral norms. We show that imitation, contingent teaching, generative collaboration, selective copying contribute domain-specific transmission knowledge between peers. S...

Despite increasing appreciation for parasitism as an important component of primate ecology and evolution, surprisingly few studies have demonstrated the costs of helminth parasitism in primates. Detecting parasite-related costs in primates is particularly difficult because it requires detailed, long-term data on individual host reproductive success, survival, and parasitism. The identification...