Citat:
Ursprungligen postat av IAmAMisanthropic
Ja, självklart. Du har förstås belägg för [att vita håller igång Sydafrikanska institutioner] också?
Självklart:
Jensen Effects among African, Indian, and White engineering students in South Africa on Raven's Standard Progressive Matrices 2002
J. Philippe Rushtona, Mervyn Skuyb, Peter Fridjhonb
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Summary:
Low test scores are routinely observed in sub-Saharan African populations. In this paper, we
explore the topic further by examining Rushton and Skuy’s [Intelligence 28 (2000) 251] hypothesis
that a bimodal distribution exists in the African population with a high-scoring group virtually
indistinguishable from Whites, and a low-scoring group performing significantly below both Whites
and the higher-scoring African group. To test this hypothesis, we sought out a potentially higherscoring
African population than has previously been studied. We administered untimed Raven’s
Standard Progressive Matrices (SPM) to 342 17- to 23-year-olds in the Faculties of Engineering and
the Built Environment at the University of the Witwatersrand in Johannesburg (198 Africans, 86
Whites, 58 Indians; 71 women, 271 men). Out of the 60 total problems, the African students solved an
average of 50, the Indian students, 53, and the White students, 56 ( P < .001). On the 1993 US norms,
Africans were at the 41st percentile, Indians at the 55th, and Whites at the 75th, with IQ equivalents of
97, 102, and 110, respectively. The African–Indian–White differences were most pronounced on
those items with the highest item-total correlations, indicating a difference in g, or the general factor of
intelligence. Hence, they were ‘‘Jensen Effects.’’ Indeed, the g loadings showed a small degree of
cross-cultural generality; for example, item-total correlations calculated on the Indian students
predicted the magnitude of the White–African differences.
Eller denna:
Performance on Raven’s Advanced Progressive Matrices
by African, East Indian, and White engineering students
in South Africa 2003
J. Philippe Rushtona, Mervyn Skuyb, Peter Fridjhonb
Citat:
Summary:
The hypothesis is tested that the Raven’s Advanced Progressive Matrices (APM) has the same
construct validity in African university students as it does in non-African university students.
Analyses were made of scores from 294 highly select 17–23-year-olds in the Faculties of
Engineering and the Built Environment at the University of the Witwatersrand (187 Africans, 40
East Indians, 67 Whites; 70 women, 224 men). Out of a total of 36 problems, the African
students solved an average of 22, the East Indian students, 25, and the White students, 29
(P < .001), placing them at the 57th, 64th, and 86th percentiles, respectively, and yielding IQ
equivalents of 103, 106, and 117 on the 1993 US norms.
Svarta ingenjörsstudenter har samma IQ som Lisa Svensson i kassan på Ica (inget ont om henne). Det är dessa blivande ingenjörer som skall ta hand om Sydafrikas kärnkraftverk i framtiden. Låter väll betryggande? Alltså, institutionerna i Sydafrika hade inte fungerat utan de vita akademikerna och kommer inte att göra det i framtiden då dessa körs ut.
