Low Cognitive Functioning in Nondemented 80+-Year-Old Twins Is Not Heritable.

Petrill, Stephen A.; Johansson, Boo; Pedersen, Nancy L.; Berg, Stig; Plomin, Robert; Ahern, Frank; McClearn, Gerald E.

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Peer reviewed

ERIC Number: EJ630385

Record Type: CIJE

Publication Date: 2001

Pages: N/A

Abstractor: N/A

ISBN: N/A

ISSN: ISSN-0160-2896

EISSN: N/A

Low Cognitive Functioning in Nondemented 80+-Year-Old Twins Is Not Heritable.

Petrill, Stephen A.; Johansson, Boo; Pedersen, Nancy L.; Berg, Stig; Plomin, Robert; Ahern, Frank; McClearn, Gerald E.

Intelligence, v29 n1 p75-83 2001

Studied the genetic influence of low cognitive functioning in 200 pairs of twins aged at least 80 years and identified as not demented. Results suggest that the heritability of low cognitive functioning in this group was nonsignificant, but above-average cognitive functioning shows substantial group heritability. (SLD)

Descriptors: Cognitive Ability, Genetics, Heredity, Low Achievement, Old Old Adults, Twins

Publication Type: Journal Articles; Reports - Research

Education Level: N/A

Audience: N/A

Language: English

Sponsor: N/A

Authoring Institution: N/A

Grant or Contract Numbers: N/A

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