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Peer reviewedNatsopoulos, D.; Christou, C.; Koutselini, M.; Raftopoulos, A.; Karefillidou, C. – Research in Developmental Disabilities, 2002
A study involving 31 adults with Down syndrome investigated their ability to reason. Results found they did not differ from typically developing children, matched on expressive and verbal ability, in transitivity and non-verbal analogical thinking; however, they did differ in categorical reasoning, classical verbal analogies, and short-term…
Descriptors: Abstract Reasoning, Adults, Cognitive Ability, Cognitive Processes
Peer reviewedHoness, Terry – British Journal of Psychology, 1979
Construct organization was inferred from subjects' responses to a specially modified implication grid. Both developmental predictions and the validity of grid measures received excellent support from the analysis of children's theories of their peers as a function of their own age, sex and verbal intelligence. (Author)
Descriptors: Abstract Reasoning, Age Differences, Concept Formation, Developmental Psychology
