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Engle, Randall W.; And Others – Journal of Educational Psychology, 1990
An experiment in which 90 undergraduate students were tested on simple and complex versions of a word-span task with high and low frequency words suggests that both word knowledge and a content-free working memory play causal roles in the relationship between word span and higher level cognitive tasks. (SLD)
Descriptors: Causal Models, Correlation, Higher Education, Individual Differences