Format

Send to

Choose Destination
Dev Psychol. 2009 Jul;45(4):1097-118. doi: 10.1037/a0015864.

Differentiation of cognitive abilities across the life span.

Author information

1
Department of Psychology, University of Virginia, Charlottesville, VA 22904-4400, USA. tuckerdrob@virginia.edu

Abstract

Existing representations of cognitive ability structure are exclusively based on linear patterns of interrelations. However, a number of developmental and cognitive theories predict that abilities are differentially related across ages (age differentiation-dedifferentiation) and across levels of functioning (ability differentiation). Nonlinear factor analytic models were applied to multivariate cognitive ability data from 6,273 individuals, ages 4 to 101 years, who were selected to be nationally representative of the U.S. population. Results consistently supported ability differentiation but were less clear with respect to age differentiation-dedifferentiation. Little evidence for age modification of ability differentiation was found. These findings are particularly informative about the nature of individual differences in cognition and about the developmental course of cognitive ability level and structure.

PMID:
19586182
PMCID:
PMC2855504
DOI:
10.1037/a0015864
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for American Psychological Association Icon for PubMed Central
Loading ...
Support Center