title: Depression in the mentally retarded: toward a conceptual analysis of diagnosis.
mesh_terms: D002648:Child; D002657:Child Development; D003866:Depressive Disorder / Q000175:diagnosis* / Q000523:psychology; D006380:Helplessness, Learned / Q000523:psychology; D006801:Humans; D008607:Intellectual Disability / Q000150:complications* / Q000175:diagnosis / Q000523:psychology; D012718:Set, Psychology; D012938:Social Perception