The purpose of this study was to compare the cognitive function of patients with chronic and severe mental retardation (education-are) is the province. Causal comparative research into the field. Thus, among patients with chronic psychological well-being and rehabilitation of mental retardation in complex Miguel race Welfare Bushehr, 60 subjects were enrolled (30 in chronic psychiatric patients, 30 patients with mild mental retardation). The research instrument, Wechsler test adults. Results based on a
multivariate analysis of variance showed that verbal intelligence (mathematics subscales, similarities, and words) and Business Intelligence (subscales designed with cubes),
chronic mental disorders and mild mental retardation (educable) significant there are. The results of this study indicate that verbal intelligence and practical chronic mental
disorders and mild mental retardation (learners) can be studied.