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Educational and Psychological…	1
Research in Developmental…	1

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Cunningham, Walter R.	1
Numminen, H.	1
Ruoppila, I.	1
Service, E.	1

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Age Changes in the Factor Structure of Intellectual Abilities in Adulthood and Old Age.

Peer reviewed

Cunningham, Walter R. – Educational and Psychological Measurement, 1980

Army alpha longitudinal data on the same 96 males tested in 1919, 1950, and 1960 were analyzed in addition to data on 123 undergraduates tested in 1972-4. Young adults in 1919 and 1970 were similar. Results suggest that traditional factor analysis taxonomies for young adults misrepresent elderly persons. (Author/CP)

Descriptors: Adults, Age Differences, Cognitive Development, Factor Analysis

Working Memory, Intelligence and Knowledge Base in Adult Persons with Intellectual Disability.

Peer reviewed

Numminen, 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