ALSPAC – Age 8.5 – WISC-III Arithmetic

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The Avon Longitudinal Study of Parents and Children (ALSPAC) assessed their cohort members (CMs) during the study’s age 8.5 sweep (Focus@8) using the Arithmetic measure from the Wechsler Intelligence Scale for Children (WISC-III).

Details on this measure and the data collected from the CMs are outlined in the table below.


Domain:Arithmetic
Measures:Numeric reasoning
Sequential processing
CHC:Quantitative Knowledge (Gq)
Administration method:Trained interviewer; clinical setting; pen and paper/oral answers
Procedure:The test contains 24 items. For items 1-5, the child responds orally to questions posed by the examiner that are related to picture stimuli. For items 6-18 the child solves problems that are read aloud by the examiner. For items 19-24 the child reads aloud problems that are written in a stimulus book, then proceeds to solve them.
Link to questionnaire:http://www.bristol.ac.uk/alspac/researchers/our-data/clinical-measures/ (opens in new tab)
Scoring:Raw scores were converted into scale scores using tables provided in the WISC manual (M = 10, SD = 3).
Item-level variable(s):Not readily available
Total score/derived variable(s):f8ws022 - f8ws052
Descriptives:Raw scoreScaled score
N = 7,332N = 7,393
Range = 0 - 28Range = 0 - 19
Mean = 14.77Mean = 10.45
SD = 3.45SD = 4.11
(click image to enlarge)
(click image to enlarge)
Age of participants:Mean = 103.82 months, SD = 3.92, Range = 89 - 127
Other sweep and/or cohort:ALSPAC – Age 4 – WPPSI-RUK Arithmetic
Source:Wechsler, D. (1991). WISC-III: Wechsler intelligence scale for children: Manual. Psychological Corporation.
Technical resources:Kaufman, A. S., & Lichtenberger, E. O. (2000). Essentials of WISC-III and WPPSI-R assessment. John Wiley & Sons Inc.
Reference examples:Northstone, K., Joinson, C., Emmett, P., Ness, A., & Paus, T. (2012). Are dietary patterns in childhood associated with IQ at 8 years of age? A population-based cohort study. Journal of Epidemiology and Community Health, 66(7), 624-628.
Bornstein, M. H., Hahn, C. S., & Wolke, D. (2013). Systems and cascades in cognitive development and academic achievement. Child Development, 84(1), 154-162.

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This page is part of CLOSER’s ‘A guide to the cognitive measures in five British birth cohort studies’.