Journal article
School achievement strongly predicts midlife IQ
Intelligence (Norwood), Vol.35(6), pp.563-567
11/01/2007
DOI: 10.1016/j.intell.2006.10.004
Abstract
The relationship between measures of IQ and standardized school achievement tests is well established at around
r
≈
0.5 when the two are measured in close proximity. The current paper examined the stability of this correlation when comparing elementary school achievement (grades 3–8) and midlife IQ. Iowa Adoption Study participants who had standardized school achievement measures (ITBS) on file were given the WAIS-III. Mean age at IQ testing was 44.01 years (SD 6.65 years). The correlation between school achievement and WAIS-III FSIQ was
r
=
0.64, suggesting substantial life span stability in this relationship. Furthermore, elementary school achievement was substantially correlated with occupational status and household income at midlife. These findings suggest that standardized school achievement data is a useful measure of premorbid IQ.
Details
- Title: Subtitle
- School achievement strongly predicts midlife IQ
- Creators
- Ruth Spinks - University of IowaStephan Arndt - University of IowaKristin Caspers - University of IowaRebecca Yucuis - University of IowaL. William McKirgan - Iowa Adoption Studies, Department of Psychiatry, University of Iowa Carver College of Medicine, United StatesChristopher Pfalzgraf - University of IowaElijah Waterman - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Intelligence (Norwood), Vol.35(6), pp.563-567
- DOI
- 10.1016/j.intell.2006.10.004
- ISSN
- 0160-2896
- eISSN
- 1873-7935
- Publisher
- Elsevier Inc
- Number of pages
- 5
- Language
- English
- Date published
- 11/01/2007
- Academic Unit
- Psychiatry; Biostatistics; Nursing; Injury Prevention Research Center
- Record Identifier
- 9985132077602771
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