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Longitudinal analysis of the genetic and environmental influences on components of cognitive delay in preschoolers

Abstract:

The etiology of verbal and performance delays were investigated in a large population sample of twins at 2 and 3 years (N = 2,449 pairs). These data replicate and extend earlier analyses at 2 years (T. C. Eley et al., 1999). Several ways of defining delay were compared, selecting from the lowest 5% of the sample on both verbal (V) and performance (P) measures. V delay with or without P delay was highly heritable (.93 and .62, respectively), whereas P delay without V delay was less heritable (...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1037//0022-0663.93.4.698

Authors


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Institution:
University of Oxford
Department:
Oxford, MSD, Experimental Psychology
Role:
Author
Medical Research Council More from this funder
Publisher:
American Psychological Association Publisher's website
Journal:
JOURNAL OF EDUCATIONAL PSYCHOLOGY Journal website
Volume:
93
Issue:
4
Pages:
698-707
Publication date:
2001-12-05
DOI:
ISSN:
0022-0663
URN:
uuid:f8791e61-f6d8-4a86-80d6-f2554ded12ee
Source identifiers:
22770
Local pid:
pubs:22770
Language:
English

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