Hoarding disorder affects about 2 percent of the population and is more common among older adults. Psychologist Mary E. Dozier, PhD, talks about the causes of hoarding disorder, its links to other mental health disorders, why many people who hoard ar...

Girls begin receiving messages that will shape their body image as young as preschool. Janet Boseovski, PhD, and Ashleigh Gallagher, PhD, author of “Beyond Body Positivity: A Mother's Science-Based Guide for Helping Girls Build a Healthy Body Image,”...

The word “extremist” might call up images of violence or terrorism. But extreme behaviors are all around us and can be a force for good as well as destruction. Arie Kruglanski, PhD, and Sophia Moskalenko, PhD, talk about what drives people to extreme...

Pain, sadness, joy, awe – under the right circumstances, any of these emotions can bring on tears. Lauren Bylsma, PhD, talks about why crying evolved, the psychological and social purposes of tears, why some people cry more easily than others, and wh...

Advocates of cultured meat say that it could help solve many environmental and animal welfare problems. But psychologists have found that some consumers say they’d be reluctant to try it. Matti Wilks, PhD, and Daniel Rosenfeld, PhD, discuss the psych...