A new study of rhesus macaques in U.S. primate research centers finds that abnormal repetitive behaviors are better explained by an animal’s lifetime accumulation of negative experiences than by ...

Rhesus macaques in U.S. research laboratories frequently pull out their own hair, pace in tight loops, and rock back and forth, behaviors long attributed to the stress of captivity. A study published ...

Daily and lifetime exposure to stress may cause wear and tear on the stress responses of Black Americans, blunting their biological stress response, a new University of Michigan study shows. Kira ...