The pursuit of happiness and the epidemic of depression.
D002657:Child Development; D002668:Child Rearing; D002675:Child, Preschool; D002962:Civilization; D003220:Conflict, Psychological; D003863:Depression / Q000453:epidemiology; D004196:Disease Outbreaks; D005639:Frustration; D006240:Happiness; D006806:Human Rights; D006801:Humans; D008399:Mass Behavior; D011057:Politics; D011574:Psychoanalytic Theory; D011588:Psychology, Educational; D012920:Social Behavior Disorders / Q000453:epidemiology; D012922:Social Change; D012931:Social Environment; D012940:Social Problems; D014481:United States; D014754:Violence