Twenty mentally retarded children (mean age 10 years) and 40 nonretarded children (grades 2 and 5) learned pairs of pictures in a single-function order (terms of each pair were in the same position throughout) or in a double-function order (all items were re-paired). (Author)

Twenty-eight learning disabled children, 6 1/2 years of age, who lacked skills and maturity for first grade placement, were tested randomly, assigned to groups, and trained either in a sequence of activities to improve grouping and memory strategies (experimentals) or in a specialized program of art experiences (controls). (MC)

Fifty-two institutionalized mentally handicapped children (average CA of 12 years) were engaged in a study attempting to determine whether there are ordinal dependencies in various scales of developmental milestones or supra-structural behaviors in language, and if so, the degree to which hierarchical levels within given categories serve as…

The effect of auditory free recall on four lists of monosyllabic word ensembles was studied in 10 learning-disabled and 10 nondisabled first grade boys. (Author/PHR)