A Negative Flynn Effect in Khartoum, the Sudanese capital
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DOI: 10.1016/j.intell.2017.05.003
Abstract: We compare the results of the Standard Progressive Matrices on two samples from Khartoum, one from 1999 (N 6877) and the other from 2010 (N 5659), both aged between 9 and 25. We show that… read more here.
Keywords: effect khartoum; negative flynn; sudanese capital; effect ... See more keywords
Children’s performance on Raven’s Coloured progressive matrices in Portugal: The Flynn effect
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DOI: 10.1016/j.intell.2020.101485
Abstract: Abstract The goal of this study was to examine how IQ changes (the Flynn effect) among school-aged children in Portugal behaved over a period of 25 years (1991, 2008 and 2016) that registered major economic transformations… read more here.
Keywords: raven coloured; intellectual ability; coloured progressive; 1991 2008 ... See more keywords
The Flynn effect in Germanophone preschoolers (1996–2018): Small effects, erratic directions, and questionable interpretations
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DOI: 10.1016/j.intell.2021.101544
Abstract: Abstract Generational intelligence test score changes were predominantly positive over most of the past century. However, so far, only little is known about this so-called Flynn effect in children that have not yet been exposed… read more here.
Keywords: effect; flynn effect; test score; germanophone preschoolers ... See more keywords
A Negative Flynn Effect in Kuwait: The same effect as in Europe but with seemingly different causes
Sign Up to like & getrecommendations! Published in 2017 at "Personality and Individual Differences"
DOI: 10.1016/j.paid.2017.03.060
Abstract: Abstract The results of two previously published Arabic language administrations of the Standard Progressive Matrices (SPM) are compared. The first is an administration of the SPM in 2006 to a probability sample of 6529 Kuwaitis… read more here.
Keywords: kuwait effect; negative flynn; effect; effect europe ... See more keywords
Comparison of models of premorbid IQ estimation using the TOPF, OPIE-3, and Barona equation, with corrections for the Flynn effect.
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DOI: 10.1037/neu0000569
Abstract: OBJECTIVE Premorbid estimates of intellectual functioning are a key to assessment. This study aimed to compare 3 common measures and assess their accuracy: the Test of Premorbid Functioning (TOPF), Oklahoma Premorbid Intelligence Estimate (OPIE-3), and… read more here.
Keywords: models premorbid; barona equation; flynn effect; opie ... See more keywords
Double Decomposition of Level-1 Variables in Multilevel Models: An Analysis of the Flynn Effect in the NSLY Data
Sign Up to like & getrecommendations! Published in 2017 at "Multivariate Behavioral Research"
DOI: 10.1080/00273171.2017.1354758
Abstract: ABSTRACT This paper introduces an extension of cluster mean centering (also called group mean centering) for multilevel models, which we call “double decomposition (DD).” This centering method separates between-level variance, as in cluster mean centering,… read more here.
Keywords: cluster mean; analysis; mean centering; level ... See more keywords