Change search
ReferencesLink to record
Permanent link

Direct link
Controlling for increased guessing enhances the independence of the Flynn effect from g: the return of the Brand effect
Umeå University, Faculty of Social Sciences, Department of Psychology. Center Leo Apostel for Interdisciplinary Research, Vrije Universiteit Brussel, Belgium.
University of Amsterdam, Work and Organizational Psychology, The Netherlands.
University of Tartu, Department of Psychology, Estonia.
Estonian National Defence College, Estonia.
2014 (English)In: Intelligence, ISSN 0160-2896, E-ISSN 1873-7935, Vol. 43, 27-34 p.Article in journal (Refereed) Published
Abstract [en]

The cause of the Flynn effect is one of the biggest puzzles in intelligence research. In this study we test the hypothesis that the effect may be even more independent from g than previously thought. This is due to the fact that secular gains in IQ result from at least two sources. First, an authentic Flynn effect that results from environmental improvements and should therefore be strongly negatively related to the g loading (and therefore the heritability) of IQ subtests. Second, a “Brand effect”, which results from an increase in the number of correct answers simply via enhanced guessing. As harder items should encourage more guessing, secular gains in IQ stemming from this Brand effect should be positively associated with subtest g loadings. Analysis of Estonian National Intelligence Test data collected between 1933 and 2006, which includes data on guessing, g loadings and secular IQ gains, corroborates this hypothesis. The correlation between gains via the Brand effect and g loadings is .95, as predicted. There is a modest negative association between raw secular gain magnitude and subtest g loadings (− .18) that increases to − .47 when these are controlled for the Brand effect. Applying five psychometric meta-analytic corrections to this estimate raises it to − .82 indicating that the authentic Flynn effect is substantially more independent from g than previously thought.

Place, publisher, year, edition, pages
Elsevier, 2014. Vol. 43, 27-34 p.
Keyword [en]
Brand effect, Flynn effect, g loadings, Jensen effect
National Category
URN: urn:nbn:se:umu:diva-87382DOI: 10.1016/j.intell.2013.12.004ISI: 000334007400004OAI: diva2:709092
Available from: 2014-03-31 Created: 2014-03-31 Last updated: 2014-05-15Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Woodley, Michael Anthony
By organisation
Department of Psychology
In the same journal

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 32 hits
ReferencesLink to record
Permanent link

Direct link