Monday, 24 June 2013

Eysenck's personality trait of Psychoticism as the primary underlying disposition, underpinning most other traits

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* Background:  http://iqpersonalitygenius.blogspot.co.uk/2012/08/creativity-and-eysencks-psychoticism.html http://iqpersonalitygenius.b...
Tuesday, 28 May 2013

Approx 1 SD decline in general intelligence since 1889 confirmed in a near-perfectly-matched sample from 1989

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* Michael A. Woodley, Jan te Nijenhuis & Raegan Murphy have followed up their long-term analysis of reaction times as evidence of a ...
Saturday, 25 May 2013

Is the claim of one standard deviation decline in intelligence since Victorian times an extraordinary claim, implying the need for extraordinary evidence?

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* The phrase and practice of "extraordinary claims require extraordinary evidence" is one of those superficially-plausible sta...
Wednesday, 15 May 2013

More than one third decline in general intelligence since Victorian times?

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* Having reflected on the title of an earlier post which described the decline in intelligence since Victorian times in terms of approxima...
Sunday, 12 May 2013

The e-mails from 2008 when I had the idea of using historical reaction time data to measure trends in intelligence

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*  Two e-mails to Richard Lynn (Emeritus Professor, University of Ulster)  5th July 2008 14:43  Richard, I've just this m...
Friday, 10 May 2013

The 15 point decline in IQ since Victorian times - what next?

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* Okay - so simple reaction time data indicates that average general intelligence has declined by about one standard deviation (15 IQ poin...
Thursday, 9 May 2013

The decline in general intelligence estimated from a meta-analysis of the slowing of simple reaction time

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* [Here is a rather rough version - sorry! best I can do - of a forthcoming paper to which I contributed; although I am not one of the ...