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Summary--This paper is divided into two parts. In the first, the rank order stability of individual differences in altruism across situations is examined and it is found that substantial consistency… (More)
The culture-only (0% genetic–100% environmental) and the hereditarian (50% genetic–50% environmental) models of the causes of mean Black–White differences in cognitive ability are compared and… (More)
- J. P. Rushton
- 1985
Abstract Differential K Theory is proposed to help systematize individual and group differences in life histories, social behaviour and physiological functioning. K refers to one end of a continuum… (More)
Three studies tested the hypothesis that a general factor of personality (GFP) underlies diverse individual differences including altruism, the Big Five factors of Openness, Conscientiousness,… (More)
- J. P. Rushton, Mervyn Skuy
- 2000
Abstract Untimed Raven's Standard Progressive Matrices (SPM) were administered to 309 17- to 23-year-old students at the University of the Witwatersrand and the Rand Afrikaans University in… (More)
- J. P. Rushton, C. D. Ankney
- Psychonomic bulletin & review
- 1996
Using data from magnetic resonance imaging (MRI), autopsy, endocranial measurements, and other techniques, we show that (1) brain size is correlated with cognitive ability about .44 using MRI; (2)… (More)
Rushton and Skuy [Intelligence 28 (2000) 1.] found that White university psychology students in South Africa averaged between one and two standard deviations higher than African students on Raven's… (More)
- J. P. Rushton, Trudy Ann Bons, +5 authors Claudio Barbaranelli
- Twin research and human genetics : the official…
- 2009
In three studies, a General Factor of Personality (GFP) was found to occupy the apex of the hierarchical structure. In Study 1, a GFP emerged independent of method variance and accounted for 54% of… (More)
Many important variables in behavioral development are presumed to be unrelated because of repeated failures to obtain substantial correlations. In this article, we explore the possibility that such… (More)
- J. P. Rushton, C. Davison Ankney
- The International journal of neuroscience
- 2009
We review the literature on the relation between whole brain size and general mental ability (GMA) both within and between species. Among humans, in 28 samples using brain imaging techniques, the… (More)