title: The effect of institutionalization on educable mental retardates' expectancy of failure.
mesh_terms: D000293:Adolescent; D000328:Adult; D001077:Aptitude Tests; D001290:Attitude; D002648:Child; D002674:Child, Institutionalized; D006760:Hospitalization; D006801:Humans; D008607:Intellectual Disability; D007902:Length of Stay; D012054:Reinforcement, Psychology; D012649:Self Concept