Why societies fall apart isn’t politics or morals, an author argues—it’s cognitive failure, a pattern he says can be scientifically tested. Evil doesn’t take over societies by force or intelligence.

Self-harming and self-sabotaging behaviors, from skin picking to ghosting people, all stem from evolutionary survival ...

When a young child struggles with hair-pulling or skin-picking, it’s tempting to focus on stopping the behavior. But what if ...

People often assume narcissists are smart, but their apparent success may have less to do with brilliance and far more to do ...