Age differences in the WISC-IV has a positive Jensen coefficient, maybe

Group differences in cognitive scores have generally been found to be g-loaded, i.e. the differences are larger on the items/subtests that load more strongly on the general factor. This is generally called a Jensen effect, and its opposite an anti-Jensen effect. However this can cause linguistic trouble when dealing with (near)-zero correlations or when dealing…

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New paper out: The personal Jensen coefficient does not predict grades beyond its association with g

Found null results for a proposed metric (actually two). In the spirit of publishing failed ideas, I wrote this up. Abstract General intelligence (g) is known to predict grades at all educational levels. A Jensen coefficient is the correlation of subtests’ g-loadings with a vector of interest. I hypothesized that the personal Jensen coefficient from…

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Paper out (some time ago): Are Headstart gains on the g factor?: A meta-analysis

Jan te Nijenhuis, Birthe Jongeneel-Grimen and Emil O. W. Kirkegaard. Are Headstart gains on the g factor?: A meta-analysis. Intelligence. Volume 46, September–October 2014, Pages 209–215   If all goes well, it may be the only paper i publish in Intelligence.   Primary author is a cool guy: http://www.uva.nl/over-de-uva/organisatie/medewerkers/content/n/i/j.tenijenhuis/j.te-nijenhuis.html The second author is his former…

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