Etiological differences in patterns of psycholinguistic development of children of IQ 30 to 60

A. Rohr, D. B. Burr

Research output: Contribution to journalArticle

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The authors compared the psycholinguistic abilities of 131 mentally retarded children (IQs 30 to 60) of different etiological classifications (Down's syndrome, biologically brain damaged, environmentally caused retardation, unknown cause) and characterized each etiology according to the different patterns of psycholinguistic skills exhibited by the children. Level of skills was determined by the Illinois Test of Psycholinguistic Abilities, which was administered to each subject. Down's syndrome children exhibited significantly lower verbal-auditory skills than visual-motor skills. The environmentally caused retardation group showed no significant differences in development of psycholinguistic channels. Down's syndrome children had significantly lower verbal-auditory abilities than did the other etiological groups of severely retarded children. Etiological differences in the visual-motor channel were less marked.

Original languageEnglish (US)
Pages (from-to)549-553
Number of pages5
JournalAmerican Journal of Mental Deficiency
Issue number6
StatePublished - Jan 1 1978


ASJC Scopus subject areas

  • Psychiatry and Mental health

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