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Korten, J. J.; And Others – Journal of Mental Deficiency Research, 1975
Presented is the case history of a severely mentally retarded patient with a 49, XXXXY chromosome pattern. (DB)
Descriptors: Congenital Impairments, Exceptional Child Research, Genetics, Institutionalized Persons

Richards, B. W. – Journal of Mental Deficiency Research, 1977
The incidence of recurrent mongolism was analyzed among, 2,331 mongol propositi (and their 6,225 sibs) in 34 British institutions and daycare centers. (BB)
Descriptors: Age Groups, Downs Syndrome, Drafting, Exceptional Child Research
Jervis, George A., Ed. – 1968
The genetics of mental retardation are discussed in terms of geographical isolates, prospects for prevention of trisomic conditions, population genetics, and cytogenetics of Down's syndrome; problems of neurogenesis described are anabolic pathways of galactose and glucose metabolism, abnormal cell migrations in developing brains, and genetic…
Descriptors: Biological Sciences, Community Programs, Disadvantaged, Down Syndrome
Zubin, Joseph, Ed.; Jervis, George A., Ed. – 1967
The proceedings include 33 papers and two addresses on the psychopathology of mental development. The following six subject areas are considered: genetics and neurophysiology, socio-cultural and paranatal factors; epidemiology; behavior characteristics and learning; observational techniques and measurement of intelligence; and diagnosis and…
Descriptors: Behavior Patterns, Biochemistry, Clinical Diagnosis, Congenital Impairments