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Adult life-span patterns in WAIS block design performance: Cross-sectional versus longitudinal age gradients and relations to demographic predictors.
Stockholm University, Faculty of Social Sciences, Department of Psychology.
2006 (English)In: Intelligence, ISSN 0160-2896, Vol. 34, no 1, 63-78 p.Article in journal (Refereed) Published
Abstract [en]

Aging pattern in WAIS-R Block Design test (BDT) performance were examined cross-sectionally and longitudinally. One sample (35-80 years, n = 1000) was assessed in 1988-1990 and five years later (836 returned). An independent cohort-matched sample (n = 974) was included at Time 2 to estimate the magnitude of practice effects. Relations between BDT performance, gender, and education were also examined. The cross-sectional analyses indicated a gradual age-related deterioration from 35 to 55, even when minor practice effects were adjusted for. Decline was apparent for the older cohorts, regardless of estimation method. Education-adjusted cross-sectional differences showed a similar pattern. A minor age- and time-invariant gender difference favoring males was observed. Education predicted some time-related change, such as higher education was associated with lesser decline. Collectively, the results demonstrate the nedd to control for cohort and retest effects in cross-sectional and longitudinal studies, and reveal interesting relations between BDT performance and demographic variables.

Place, publisher, year, edition, pages
2006. Vol. 34, no 1, 63-78 p.
Keyword [en]
life span, aging patterns, block design, aging, cross-sectional, longitudinal
National Category
Psychology
Identifiers
URN: urn:nbn:se:su:diva-19885DOI: doi:10.1016/j.intell.2005.06.004OAI: oai:DiVA.org:su-19885DiVA: diva2:186409
Available from: 2007-11-19 Created: 2007-11-19 Last updated: 2011-01-11Bibliographically approved

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