[Unfavorable family conditions and the characteristics of the clinical picture of mental retardation in school-age children].
The paper treats of the data concerned with the clinical picture of mental retardation in children from so-called incomplete families. It is noted that as regards a number of parameters, the children of the group under study occupy an intermediate place between children from incomplete families and orphans whereas as to the other parameters, they correspond with orphans or, on the contrary, do not differ from complete family children. The author also demonstrates the role played by the other unfavourable family conditions in the formation of both the intellectual defect and aggravating symptomatology in a mentally retarded child.