Cognitive abilities: the state of the art
Article Abstract:
The past 10 years have seen several advancements in the study of cognitive abilities. Considerable changes in the measurement of these skills as well as in the notion of ability itself have had its effects in this area of study. Intelligence tests, for one, have been revised and updated to keep up with societal changes. However, information on the structure of cognitive abilities is still scarce and this hinders the construction of adequate measures. Another area calling for attention is the question of what specific abilities are genetic in nature and up to what extent can they be modified.
Publication Name: Psychological Science
Subject: Psychology and mental health
ISSN: 0956-7976
Year: 1992
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A quantitative trade locus associated with cognitive ability in children
Article Abstract:
A research was undertaken to determine the genetic contribution of quantitative trait loci (QTL) to the general cognitive ability (G) in children. It was presumed that G is one of the predominantly heritable behavioral traits. In determining the QTL linkage, the allelic association strategy was used since it can give the statistical ability to detect QTLs with small effect size. Results indicated that the insulin-like growth factor-2 receptor (IGF2R) gene was associated with high heritability. Genetic effects on G increase in magnitude from childhood to adulthood.
Publication Name: Psychological Science
Subject: Psychology and mental health
ISSN: 0956-7976
Year: 1998
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A quantitative genetic analysis of cognitive abilities during the second half of the life span
Article Abstract:
The genetic effects of cognitive abilities during the second half of the life span were presented. Identical twins separated at an early age and reared apart, identical twins reared together, fraternal twins reared apart and fraternal twins reared together weregiven cognitive battery examinations. Results show that heritability of generalcognitive ability in these twins was higher than estimates determined at an earlier age. Heritability of specific cognitive abilities was also lower than the heritability of general cognitive abilities.
Publication Name: Psychological Science
Subject: Psychology and mental health
ISSN: 0956-7976
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
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