Learned helplessness.
D000223:Adaptation, Psychological; D000818:Animals; D001362:Avoidance Learning; D001519:Behavior; D003645:Death, Sudden; D003863:Depression; D004285:Dogs; D004924:Escape Reaction; D006801:Humans; D051381:Rats; D012649:Self Concept; D012718:Set, Psychology; D013312:Stress, Physiological