Wikipedia lists 36 obsolete psychological categories. These include drapetomania, a supposed mental disorder that led enslaved African Americans to run away; hysteria, the host of motor, psychic and ...

"The history of the American science of animal emotions reveals the ability of animals to teach and scientists to learn." I recently learned about a book by Pennsylvania State University distinguished ...

Do you ever wonder why some characteristics seem to run in families? Or why emotional heartbreak can feel so physically ...