Inbreeding depression and IQ in a study of 72 countries

MA Woodley - Intelligence, 2009 - Elsevier
In this ecological study, a robust negative correlation of r=−. 62 (P<. 01) is reported between
national IQs and consanguinity as measured by the log10 transformed percentage of
consanguineous marriages for 72 countries. This correlation is reduced in magnitude, ...

The rise and fall of the Flynn effect as a reason to expect a narrowing of the Black–White IQ gap

JP Rushton, AR Jensen - Intelligence, 2010 - Elsevier
... Abstract. In this Editorial we correct the false claim that g loadings and inbreeding depression
scores correlate with the secular gains in IQ. ... In point of fact, while g loadings and inbreeding
depression scores on the 11 subtests of the Wechsler Intelligence Scale for Children ...

The totality of available evidence shows the race IQ gap still remains

JP Rushton, AR Jensen - Psychological Science, 2006 - pss.sagepub.com
... Secular gains in IQ not related to the g factor and inbreeding depression—unlike
Black-White differences. Personality and Individual Differences , 26, 381–389. ... The testing
of Negro intelligence (2nd ed.). New York: Social Science Press. ...

Parasite prevalence and the distribution of intelligence among the states of the USA

C Eppig, CL Fincher, R Thornhill - Intelligence, 2011 - Elsevier
... 2006), evolutionary novelty of the environment (Kanazawa, 2008a), inbreeding depression (Saadat,
2008 and ... stress was the best predictor of average national intelligence, with correlations between
infectious disease stress and average national IQ ranging from r ...

Resolving the IQ paradox: heterosis as a cause of the Flynn effect and other trends.

MA Mingroni - Psychological Review, 2007 - psycnet.apa.org
... effect. He also suggested intelligence might be increasing as well. As with IQ, no
effort has yet been made to measure the potential contribution of heterosis to the
height trend, at least not in any quantitatively rigorous way. One ...

[CITATION][C] Inbreeding effects on metrical phenotypes among north Indian children

Badaruddoza - COLLEGIUM …, 2004 - … RES, PO BOX 290, ULICA GRADA …

Wechsler Intelligence Test

I Scale - Health, 2004 - aph.sagepub.com
... of inbreeding effects, whereas, a systematic indication of a linear effect of inbreeding depression
has also ... the non-linear effect (deviation from linear effect) of inbreeding for verbal intelligence
quotient is ... of the test scores for each of the components of performance IQ among the ...

[HTML][HTML] Estimating the inbreeding depression on cognitive behavior: a population based study of child cohort

M Fareed, M Afzal - PloS one, 2014 - journals.plos.org
... The Wechsler Intelligence Scales for Children (WISC) was used to measure the verbal IQ (VIQ),
performance IQ (PIQ) and full scale IQ (FSIQ). ... Our comprehensive assessment provides the
evidence for inbreeding depression on cognitive abilities among children. ...

Heterosis versus inbreeding depression effects: an investigation of personality, digit ratio (2D: 4D), and laterality traits

M Voracek, N Alge, S Stieger - Mankind Quarterly, 2011 - search.proquest.com
... Social Biology 17: 1-16. Woodley, MA. (2009) Inbreeding depression and IQ in a study of 72
countries. Intelligence 37: 268-276. Woodley, MA. (2011) Heterosis doesn't cause the Flynn effect:
a critical examination of Mingroni (2007). Psychological Review 118: 689-693. ...

The IQ of Gypsies in central Europe

P Bakalar - Mankind quarterly, 2004 - questia.com
... This could result in inbreeding depression that reduced intellectual ability (Jensen, 1998, pp. ...
There is, however, another force that may have enhanced the intelligence of the Gypsy population
during the ... It is reasonable to speculate that higher IQ was an advantage for survival. ...

Create alert