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Direct linkWicherts, Jelte M.; Dolan, Conor V.; van der Maas, Han L. J. – Intelligence, 2010
On the basis of several reviews of the literature, Lynn [Lynn, R., (2006). Race differences in intelligence: An evolutionary analysis. Augusta, GA: Washington Summit Publishers.] and Lynn and Vanhanen [Lynn, R., & Vanhanen, T., (2006). IQ and global inequality. Augusta, GA: Washington Summit Publishers.] concluded that the average IQ of the…
Descriptors: International Studies, Intelligence Quotient, Foreign Countries, Psychometrics
Wicherts, Jelte M.; Dolan, Conor V.; Carlson, Jerry S.; van der Maas, Han L. J. – Learning and Individual Differences, 2010
In his comment on our literature review of data on the performance of sub-Saharan Africans on Raven's Progressive Matrices, Lynn (this issue) criticized our selection of samples of primary and secondary school students. On the basis of the samples he deemed representative, Lynn concluded that the average IQ of sub-Saharan Africans stands at 67…
Descriptors: Legislators, Academic Achievement, Intelligence Quotient, Foreign Countries
Peer reviewedRaven, John – Journal of Educational Measurement, 1989
Recent results relating to the stability of scores on the Raven Progressive Matrices Test for different subgroups within and between the United Kingdom, United States, and other Western societies are summarized. Despite the continuous increase in scores over time, differences between socioeconomic and ethnic groups remain. (TJH)
Descriptors: Educational Trends, Elementary Secondary Education, Ethnicity, Foreign Countries
Download full textFreeman, Joan – Journal for the Education of the Gifted, 2006
This ongoing investigation was concerned with why some children were labeled gifted while others of identical measured ability were not. Each labeled "gifted" child was matched for age, sex, and socioeconomic status (SES) with two others in the same school class. The first matched child had an identical Raven's Matrices raw score, and…
Descriptors: Academically Gifted, Investigations, Age Differences, Gender Differences
