Some kids fight every "demand." The "Big 5" and personality science may explain why—and what that means for treatment.

Jealousy is a normal human emotion defined by the Oxford English Dictionary as "feeling or showing resentment towards a person one thinks of as a rival." Pathological jealousy, also known as ...

For the first time, researchers at the Netherlands Institute for Neuroscience and Amsterdam UMC have identified what happens in neural networks deep within the brain during obsessive thoughts and ...