The Strength of "g" at Different Levels of Ability: Have Detterman and Daniel Rediscovered Spearman's "Law of Diminishing Returns"?.

Deary, Ian J.; Pagliari, Claudia

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Peer reviewed

ERIC Number: EJ433836

Record Type: Journal

Publication Date: 1991

Pages: N/A

Abstractor: N/A

ISBN: N/A

ISSN: ISSN-0160-2896

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The Strength of "g" at Different Levels of Ability: Have Detterman and Daniel Rediscovered Spearman's "Law of Diminishing Returns"?

Deary, Ian J.; Pagliari, Claudia

Intelligence, v15 n2 p247-50 Apr-Jun 1991

D. K. Detterman and M. H. Daniel's recognition (1989) that intertest correlations for intelligence quotient (IQ) might not be uniform across the range of ability (and age) was anticipated by C. E. Spearman (1904). Detterman and Daniel appear to have rediscovered Spearman's suggested law of diminishing returns. (SLD)

Descriptors: Ability, Age Differences, Correlation, Intelligence Quotient, Intelligence Tests, Theories

Publication Type: Journal Articles; Opinion Papers; Reports - Evaluative

Education Level: N/A

Audience: N/A

Language: English

Sponsor: N/A

Authoring Institution: N/A

Grant or Contract Numbers: N/A