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Do Differences in IQ Predict Italian North-South Differences in Income? A Methodological Critique to Lynn
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Beraldo, Sergio – Intelligence, 2010
Lynn (2010) suggests that differences in average intelligence explain many of the differences observed across the Italian regions. This paper puts forward a methodological critique to his study, coupling it with an empirical test showing that Lynn's analysis is not sufficiently robust to support its conclusions. (Contains 2 tables.)
Descriptors: Foreign Countries, Research Methodology, Research Problems, Intelligence
IQ Differences between the North and South of Italy: A Reply to Beraldo and Cornoldi, Belacchi, Giofre, Martini, and Tressoldi
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Lynn, Richard – Intelligence, 2010
Beraldo (2010) and Cornoldi, Belacchi, Giofre, Martini, and Tressoldi (2010) (CBGMT) have eight criticisms of my paper (Lynn, 2010) claiming that the large north-south differences in per capita income in Italy are attributable to differences in the average levels of intelligence in the populations. CBGMT give results for seven data sets for IQs in…
Descriptors: Intelligence, Income, Criticism, Foreign Countries
Intelligence Research at the Interface between Differential and Cognitive Psychology: Prospects and Proposals.
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Sternberg, Robert H. – Intelligence, 1978
This editorial suggests how the approaches of differential psychology and information processing psychology should be combined to study intelligence. Methods reviewed include factor analysis, componential analysis, and computer simulation. Guidelines for the specification of subtheories of intelligence, as well as future theories and methods for…
Descriptors: Cognitive Ability, Cognitive Processes, Intelligence, Intelligence Differences
Natal Influences and Twin Differences: Draft.
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Van den Daele, Leland D. – Journal of Genetic Psychology, 1972
A classification of natal influences is proposed with a model of their operation. Natal influences affect maternal capacity, maternal load, and maternal efficiency. Since maternal load is increased in twin pregnancy, results of twin studies must be generalized with caution. The method of co-twin control is exemplified by examination of a small…
Descriptors: Bibliographies, Genetics, Heredity, Individual Characteristics
Intelligence: Genetic and Environmental Influences.
Cancro, Robert, Ed. – 1971
This book on the genetic and environmental influences on intelligence is comprised of the following papers: "The Structure of Intelligence in Relation to the Nature-Nurture Controversy," R. B. Cattell; "Theory of Intelligence," L. G. Humphreys; "Using Measured Intelligence Intelligently," P. R. Merrifield; "Intelligence: Definition, Theory, and…
Descriptors: Biological Influences, Cognitive Development, Cultural Influences, Environmental Influences
Negro and White Children, A Psychological Study in the Rural South. Social Psychology: A Series of Monographs, Treatises, and Texts.
Baughman, E. Earl; Dahlstrom, W. Grant – 1968
Literature relative to the economically disadvantaged and their personal characteristics has, to a great extent, centered on urban dwellers in recent years. The research reported in this book grew out of the belief that the impoverished in the rural areas no less than those in the city deserve serious attention. The research involved utilized…
Descriptors: Academic Achievement, Adjustment (to Environment), Black Youth, Children