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Open AccessArticle

The Flynn Effect in Families: Studies of Register Data on Norwegian Military Conscripts and Their Families

Institute of Psychology, University of Oslo, P.O. Box 1094 Blindern, N-0317 Oslo, Norway
J. Intell. 2014, 2(3), 106-118; https://doi.org/10.3390/jintelligence2030106
Received: 19 February 2014 / Revised: 2 May 2014 / Accepted: 19 August 2014 / Published: 18 September 2014
(This article belongs to the Special Issue Methodological Advances in Understanding the Flynn Effect)
In the present paper published data and new analyses are presented and discussed in order to demonstrate the power of family data (siblings and parents to military conscripts with IQ data) in the study of the Flynn effect (FE). In particular, it is shown how studies of the mean intelligence changes in sibships of different sizes and changing proportions of sibship sizes can enhance our understanding how these factors may influence FE. Some new analyses of correlations between intelligence and sibship sizes illustrate how family data can be used to investigate changes in the correlation pattern across generations. It is shown that comparison of the secular trends in the general population and in sibling pairs can be a powerful method in the exploration of the relative influence of between-families and within-families factors in the FE. Surprising connections between the birth order effect on intelligence and the FE are demonstrated. View Full-Text
Keywords: Flynn effect; intelligence; military conscripts; family data Flynn effect; intelligence; military conscripts; family data
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Sundet, J.M. The Flynn Effect in Families: Studies of Register Data on Norwegian Military Conscripts and Their Families. J. Intell. 2014, 2, 106-118.

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