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Broad ability factors in 12- to 13-year-old children, the theory of fluid and crystallized intelligence, and the differentiation hypothesis.
Undheim, Johan O.Volume:
70
Year:
1978
Language:
english
Journal:
Journal of Educational Psychology
DOI:
10.1037/0022-0663.70.3.433
File:
PDF, 868 KB
english, 1978