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Direct linkRen, Xuezhu; Goldhammer, Frank; Moosbrugger, Helfried; Schweizer, Karl – Learning and Individual Differences, 2012
The aim of the present study was to clarify the nature of the ability-specific and position-specific components of Raven's Advanced Progressive Matrices (APM) by relating them to a number of types of attention. The ability-specific component represents the constant part of cognitive performance whereas the position-specific component reflects the…
Descriptors: Attention, Cognitive Ability, Models, Data
D'Amico, Antonella; Cardaci, Maurizio; Di Nuovo, Santo; Naglieri, Jack A. – Learning and Individual Differences, 2012
Lynn (2010a, 2010b) argued that individuals from south Italy have a lower IQ than individuals from north Italy, and that these differences in IQ are at the basis of north-south gap in income, education, infant mortality, stature, and literacy. In the present paper, we discuss several theoretical and methodological aspects which we regard as flaws…
Descriptors: Intelligence, Intelligence Quotient, Foreign Countries, Cognitive Ability
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
