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.
|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 score||Scaled score|
|N = 7,332||N = 7,393|
|Range = 0 - 28||Range = 0 - 19|
|Mean = 14.77||Mean = 10.45|
|SD = 3.45||SD = 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.|
- Overview of all cognitive measures in ALSPAC
- Overview of childhood cognitive measures across all studies
This page is part of CLOSER’s ‘A guide to the cognitive measures in five British birth cohort studies’.