Human encroachment appears to be threatening chimpanzees’ behavioral diversity, finds a study in Science. Previous research has found that chimpanzees pass on some behavioral traditions–such as using sticks to fish for algae or cracking nuts with stones–that differ from...

Setting attainable goals now may set you up for happiness later, suggests a longitudinal study in the European Journal of Personality. Researchers interviewed 973 people, ages 18 to 92, living in Switzerland, and followed up with 637 of them two years later...

Combat veterans may experience more depression and anxiety as they age compared with military veterans who did not see combat, suggests a study in Psychology and Aging. Researchers examined survey data from more than 1,100 U.S. military veterans, collected between 1985...