To fight off an infection or illness, the body shifts into a slow-down mode that mirrors some symptoms of depression. In fact, scientists now think the immune response itself may even cause the mood disorder.

A new analysis challenges the view that a few people with special experience can detect others’ lies with great accuracy.

People nonverbally impose a specific order on descriptions of witnessed events, a tendency that may influence the structure of new languages, a new study suggests.

Indian survivors of the devastating Asian tsunami employed spiritual and community coping strategies to regain emotional balance

Boys who attend preschool classes with a majority of girls do better developmentally than other boys.

New research with Amazonian villagers suggests that their language lacks number words but that they still comprehend precise quantities of objects.

Capuchin monkeys can reason with tokens as they do with different foods, demonstrating a basic capacity for thinking symbolically.