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Peer reviewedHulme, Charles; Turnbull, Jennifer – British Journal of Psychology, 1983
Explores the generality of findings relating intelligence to Inspection Time (IT), the exposure necessary to judge which of two lines is longer, in two studies using normal children and mentally retarded adults. Results showed the relationship between IT and performance IQ was lower in the mentally retarded group. (JAC)
Descriptors: Adults, Cognitive Processes, Elementary Education, Foreign Countries
Peer reviewedBoutin, Pierrette; And Others – Journal of Autism and Developmental Disorders, 1997
A Canadian study compared the rate of cognitive disabilities in 156 relatives of 49 individuals with autism to that found in 55 relatives of 18 individuals with mental retardation. No differences were found; however, female and low IQ individuals were found to have higher family histories of cognitive disabilities. (Author/CR)
Descriptors: Adults, Autism, Cognitive Ability, Family Characteristics
Peer reviewedNumminen, H.; Service, E.; Ruoppila, I. – Research in Developmental Disabilities, 2002
A study explored working memory (WM) capacity, WM task requirements, as well as effects between WM, skills, knowledge base, and intelligence in adults with mental retardation and children aged 3-6 years. Adults were better on measures reflecting skills and knowledge base. Children performed better in phonological and visuo-spatial WM tasks.…
Descriptors: Adults, Cognitive Development, Cognitive Processes, Foreign Countries
Peer reviewedMacKay, D. N.; Bankhead, I. – Perceptual and Motor Skills, 1983
Groups of mentally retarded subjects matched for sex, chronological age, mental age, and length of institutionalization were observed on three reaction time tasks for which pre-response complexity varied. Down's Syndrome subjects did not differ from epileptic and undifferentiated retarded subjects in reaction time performance on any of the tasks.…
Descriptors: Auditory Stimuli, Downs Syndrome, Elementary Secondary Education, Epilepsy
