Another failure to replicate Lynn's estimate of the average IQ of sub-Saharan Africans
JM Wicherts, CV Dolan, JS Carlson… - Learning and Individual …, 2010 - Elsevier
… Lynn's indifference to sample sizes; (3) our decision not to include unhealthy samples, which
Lynn … administration had met with problems, which Lynn attributes to low cognitive ability of …
Lynn … administration had met with problems, which Lynn attributes to low cognitive ability of …
A systematic literature review of the average IQ of sub-Saharan Africans
… In view of the principle of “the totality of the available evidence” (Gottfredson, 2005), we
discuss all the data sets used by Lynn (and Vanhanen) to support their claim that average IQ in …
discuss all the data sets used by Lynn (and Vanhanen) to support their claim that average IQ in …
The dangers of unsystematic selection methods and the representativeness of 46 samples of African test-takers
… We conclude that Lynn and Meisenberg's … Lynn and Meisenberg's work suffers from much
of the same problems as the previous work by Lynn, 2006, Lynn and Vanhanen, 2002, Lynn …
of the same problems as the previous work by Lynn, 2006, Lynn and Vanhanen, 2002, Lynn …
Why national IQs do not support evolutionary theories of intelligence
… To enable a comparison to the literature, we employed Lynn and Vanhanen’s estimates
of national IQ in countries that have mostly indigenous inhabitants (in line with Templer & …
of national IQ in countries that have mostly indigenous inhabitants (in line with Templer & …
Raven's test performance of sub-Saharan Africans: Average performance, psychometric properties, and the Flynn Effect
JM Wicherts, CV Dolan, JS Carlson… - Learning and Individual …, 2010 - Elsevier
… points higher than the estimate of Lynn (and Vanhanen). There are some large discrepancies
between our IQ estimates and those of Lynn (and Vanhanen). We refer to Wicherts (2007) …
between our IQ estimates and those of Lynn (and Vanhanen). We refer to Wicherts (2007) …
Evolution, brain size, and the national IQ of peoples around 3000 years BC
… Lynn (this issue) dismissed the Flynn … by Lynn and Rushton. In light of space limitations, we
discuss here neither the validity of Lynn and Vanhanen’s national IQ estimates (see Wicherts, …
discuss here neither the validity of Lynn and Vanhanen’s national IQ estimates (see Wicherts, …
Publish (your data) or (let the data) perish! Why not publish your data too?
JM Wicherts, M Bakker - Intelligence, 2012 - Elsevier
… and Vanhanen's (2006) work on national IQ (eg, Wicherts, Dolan, Carlson, & van der Maas,
2010), their work was followed up by many researchers simply because Lynn and Vanhanen …
2010), their work was followed up by many researchers simply because Lynn and Vanhanen …
[HTML][HTML] Proceedings of the 4th World Conference on Research Integrity: Brazil, Rio de Janeiro. 31 May-3 June 2015
…, C Hartgerink, M van Assen, J Wicherts… - Research Integrity and …, 2016 - Springer
The search term ‘expression of concern’was entered in the PubMed database (N= 275 items
as of May 10th, 2015) of which 123 were of some type of EoC. Only ‘editorial’EoCs where …
as of May 10th, 2015) of which 123 were of some type of EoC. Only ‘editorial’EoCs where …
Two failures of Spearman's hypothesis: The GATB in Holland and the JAT in South Africa
CV Dolan, W Roorda, JM Wicherts - Intelligence, 2004 - Elsevier
… On the basis of a significant correlation of .62 that was obtained for the BW differences using
the corrected g loadings in the Black sample, Lynn and Owen concluded that Spearman's …
the corrected g loadings in the Black sample, Lynn and Owen concluded that Spearman's …
[PDF][PDF] What is the national g-factor
JM Wicherts, O Wilhelm - European Journal of Personality, 2007 - researchgate.net
… compromised by many systematic flaws in Lynn and Vanhanen’s (2002, 2006) IQ data. For
example, the IQ values for African countries are consistently too low (Wicherts, 2007), which …
example, the IQ values for African countries are consistently too low (Wicherts, 2007), which …