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The natural history of change in intellectual performance: who changes? How much? Is it meaningful?

Publication ,  Journal Article
Moffitt, TE; Caspi, A; Harkness, AR; Silva, PA
Published in: Journal of child psychology and psychiatry, and allied disciplines
May 1993

A prerequisite step for studying the magnitude and meaning of IQ change is to distinguish between true IQ change that is a researchable phenomenon and IQ "change" that can be accounted for by measurement error. We studied the reliability, magnitude and meaning of IQ change using scores on the WISC--R obtained from a representative sample of 794 children at ages 7, 9, 11 and 13. The findings suggest that, in the majority of children, IQ change is either negligible in amount, unreliably measured or both. In a nontrivial minority of children, naturalistic IQ change is marked and real, but this change is variable in its timing, idiosyncratic in its source and transient in its course. We discuss the implications of these findings for interventions that aspire to improve IQ scores.

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Published In

Journal of child psychology and psychiatry, and allied disciplines

DOI

EISSN

1469-7610

ISSN

0021-9630

Publication Date

May 1993

Volume

34

Issue

4

Start / End Page

455 / 506

Related Subject Headings

  • Wechsler Scales
  • Reproducibility of Results
  • Psychometrics
  • New Zealand
  • Male
  • Longitudinal Studies
  • Intelligence Tests
  • Intelligence
  • Intellectual Disability
  • Humans
 

Citation

APA
Chicago
ICMJE
MLA
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Moffitt, T. E., Caspi, A., Harkness, A. R., & Silva, P. A. (1993). The natural history of change in intellectual performance: who changes? How much? Is it meaningful? Journal of Child Psychology and Psychiatry, and Allied Disciplines, 34(4), 455–506. https://doi.org/10.1111/j.1469-7610.1993.tb01031.x
Moffitt, T. E., A. Caspi, A. R. Harkness, and P. A. Silva. “The natural history of change in intellectual performance: who changes? How much? Is it meaningful?Journal of Child Psychology and Psychiatry, and Allied Disciplines 34, no. 4 (May 1993): 455–506. https://doi.org/10.1111/j.1469-7610.1993.tb01031.x.
Moffitt TE, Caspi A, Harkness AR, Silva PA. The natural history of change in intellectual performance: who changes? How much? Is it meaningful? Journal of child psychology and psychiatry, and allied disciplines. 1993 May;34(4):455–506.
Moffitt, T. E., et al. “The natural history of change in intellectual performance: who changes? How much? Is it meaningful?Journal of Child Psychology and Psychiatry, and Allied Disciplines, vol. 34, no. 4, May 1993, pp. 455–506. Epmc, doi:10.1111/j.1469-7610.1993.tb01031.x.
Moffitt TE, Caspi A, Harkness AR, Silva PA. The natural history of change in intellectual performance: who changes? How much? Is it meaningful? Journal of child psychology and psychiatry, and allied disciplines. 1993 May;34(4):455–506.
Journal cover image

Published In

Journal of child psychology and psychiatry, and allied disciplines

DOI

EISSN

1469-7610

ISSN

0021-9630

Publication Date

May 1993

Volume

34

Issue

4

Start / End Page

455 / 506

Related Subject Headings

  • Wechsler Scales
  • Reproducibility of Results
  • Psychometrics
  • New Zealand
  • Male
  • Longitudinal Studies
  • Intelligence Tests
  • Intelligence
  • Intellectual Disability
  • Humans