title: "Learned helplessness," "learned hopefulness," and "learned obsessiveness": effects of varying contingencies on escape responding.
mesh_terms: D003216:Conditioning, Operant; D003863:Depression / Q000523:psychology; D005108:Extinction, Psychological; D005246:Feedback; D006801:Humans; D008960:Models, Psychological; D009771:Obsessive-Compulsive Disorder / Q000523:psychology*; D012055:Reinforcement Schedule