Thirty-four mentally retarded, institutionalized adults were subjects in a study of the effects of sensorimotor integrative treatment procedures on sensorimotor development. The 25 subjects in the experimental group received group sensorimotor integrative treatment in addition to regular institutional programming; the 9 subjects in the control group received only the regular institutional progr...

Through a community study of boys requiring special education for the severely mentally retarded, 12 families were ascertained in which the fragile X was found to be segregating. By assiduous follow up of these families, it was found that in only four of them could male transmission be ruled out from the grandparents' or great grandparents' generation and that the segregation ratios are disturbed.

et al., 1961; Lubs, Koenig, and Brandt, 1961) has recently been identified with the late-replicating, distally labelled, D1 (13) pair (Yunis, Hook, and Mayer, 1964b; Yunis et al., 1964a; Yunis and Hook, 1966; Gianne]li, 1965; Giannelli and Howlett, 1966; Lee et al., 1966; Wilson et al., 1967; Bloom and Gerald, 1968). This report concerns a retarded adult with some manifestations of the D1 syndr...