Search Results

Author: Kanazawa, Satoshi
Resulting in 3 citations.
1. Kanazawa, Satoshi
The Myth of Racial Discrimination in Pay in the United States
Managerial and Decision Economics 26,5 (July-August 2005): 285-294.
Also: http://onlinelibrary.wiley.com/doi/10.1002/mde.1229/abstract
Cohort(s): NLSY79
Publisher: Wiley Online
Keyword(s): Cognitive Ability; Discrimination, Job; Discrimination, Racial/Ethnic; General Social Survey (GSS); Minorities; Wages

Permission to reprint the abstract has not been received from the publisher.

The analyses of the General Social Survey data from 1974 to 2000 replicate earlier findings from the National Longitudinal Survey of Youth that racial disparity in earnings disappears once cognitive ability is controlled for. The results are robust across many alternative specifications, and further show that blacks receive significantly greater returns to their cognitive ability than nonblacks. The trend data show that there was no sign of racial discrimination in the United States as early as 1970s. The analyses call into question the necessity of and justification for preferential treatment of ethnic minorities. Copyright © 2005 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]
Bibliography Citation
Kanazawa, Satoshi. "The Myth of Racial Discrimination in Pay in the United States." Managerial and Decision Economics 26,5 (July-August 2005): 285-294.
2. Woodley, Michael A.
Fernandes, Heitor B.F.
Kanazawa, Satoshi
Dutton, Edward
Sinistrality Is Associated with (slightly) lower General Intelligence: A Data Synthesis and Consideration of Secular Trend Data in Handedness
HOMO: Journal of Comparative Human Biology 69,3 (May 2018): 118-126.
Also: https://www.sciencedirect.com/science/article/pii/S0018442X18300246
Cohort(s): NLSY79, NLSY97
Publisher: Elsevier
Keyword(s): Cross-national Analysis; Handedness; I.Q.; Intelligence; NCDS - National Child Development Study (British)

The relationship between the general factor of intelligence (g) and handedness is investigated using a combined sample of 23511 respondents from three large databases: the NLSY'79 (US), NLSY'97 (US) and NCDS (UK). Dextrals -- those who use their right hands -- were found to be 1.22 IQ points higher than sinistrals (left handers) after controling for sex and age and correcting for sources of measurement error.
Bibliography Citation
Woodley, Michael A., Heitor B.F. Fernandes, Satoshi Kanazawa and Edward Dutton. "Sinistrality Is Associated with (slightly) lower General Intelligence: A Data Synthesis and Consideration of Secular Trend Data in Handedness." HOMO: Journal of Comparative Human Biology 69,3 (May 2018): 118-126.
3. Woodley, Michael A.
Reeve, Charlie L.
Kanazawa, Satoshi
Meisenberg, Gerhard
Fernandes, Heitor B.F.
Cabeza de Baca, Tomas
Contemporary Phenotypic Selection on Intelligence is (mostly) Directional: An Analysis of Three, Population Representative Samples
Intelligence 59 (November-December 2016): 109-114.
Also: http://www.sciencedirect.com/science/article/pii/S0160289616300915
Cohort(s): NLSY79
Publisher: Elsevier
Keyword(s): Armed Services Vocational Aptitude Battery (ASVAB); Britain, British; Fertility; Gender Differences; I.Q.; Project Talent; Racial Differences

Three large and nationally representative datasets (NCDS, N = 5225, NLSY79, N = 7598 and Project Talent, N = 76,150) are here examined in order to determine if models incorporating negative quadratic effects of IQ on fertility (which would indicate the presence of stabilizing phenotypic selection) improve model fit, relative to ones that only consider linear effects (which indicate directional phenotypic selection). Also considered were possible interactions among these terms and sex and race. For two datasets (NCDS and NLSY79) the best fitting models did not include quadratic terms, however significant sex*IQ and race*IQ interactions were found respectively. Only in Project Talent did the inclusion of a quadratic effect (along with IQ*sex and IQ2* sex interactions) yield the best-fitting model. In this instance a small magnitude, significant negative quadratic term was found in addition to a larger magnitude linear term. Post hoc power analysis revealed that power was lacking in the two smaller samples (NCDS and NLSY′79) to detect the quadratic term, however the best fitting and most parsimonious models selected for these datasets did not include the quadratic term. The quadratic terms were furthermore several times smaller in magnitude than the linear terms in all models incorporating both terms. This indicates that stabilizing phenotypic selection is likely only very weakly present in these datasets. The dominance of linear effects across samples therefore suggests that phenotypic selection on IQ in these datasets is principally directional, although the magnitude of selection is relatively small, with IQ explaining at most 1% of the variance in fertility.
Bibliography Citation
Woodley, Michael A., Charlie L. Reeve, Satoshi Kanazawa, Gerhard Meisenberg, Heitor B.F. Fernandes and Tomas Cabeza de Baca. "Contemporary Phenotypic Selection on Intelligence is (mostly) Directional: An Analysis of Three, Population Representative Samples." Intelligence 59 (November-December 2016): 109-114.