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Parent-Child Resemblance: Genetics, Education and Chance
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Nelissen, Jo M. C. – Education and Society, 2021
In this article, it is argued that it makes sense to define and distinguish three levels of human intelligence: intelligence as genotypical potential, intelligence as actualised in environmental interaction, and intelligence as measured by tests (IQ). This raises the questions of what is meant by the term "intelligence as potential", and…
Descriptors: Genetics, Intelligence Quotient, Parent Influence, Individual Characteristics
Familial Resemblance in Infant Mental Development
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Nichols, Paul L.; Broman, Sarah H. – Developmental Psychology, 1974
Scores on a mental development scale were correlated for 8-month-old twins and other sibling pairs. Greater correlations were found between twins than sibling pairs. (ST)
Descriptors: Cognitive Development, Family Environment, Heredity, Infants
Twins: Within-pair similarity on Bayley's Infant Behavior Record
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Matheny, Adam P., Jr.; And Others – Journal of Genetic Psychology, 1976
Summary scores for behaviors rated on Bayley's Infant Behavior Record were obtained by summing sequential ratings for same-sex twins participating in a longitudinal study. Composite scores were calculated for two behavioral clusters - one composed of behaviors related to primary cognitions and the other of behaviors related to extraversion.…
Descriptors: Cognitive Development, Heredity, Infant Behavior, Infants
Why Aren't Identical Twins Linguistically Identical? Genetic, Prenatal and Postnatal Factors
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Stromswold, Karin – Cognition, 2006
Results of twin studies clearly demonstrate that genetic factors play an important role in the rate of language acquisition and linguistic proficiency attained by normal and impaired children and adults [see Stromswold, K. (2001). The heritability of language: A review and meta-analysis of twin, adoption and linkage studies. "Language," 77,…
Descriptors: Twins, Genetics, Language Acquisition, Heredity
Genetic and Environmental Influences on Cognition during Childhood.
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Fulker, David W.; Cherny, Stacey S. – Population Research and Policy Review, 1995
Describes a methodology of behavior genetics in the context of twin and sibling/adoption design. This model was applied to cross-sectional data on cognitive development throughout the lifespan. Results from a twin and adoption study of general intelligence are presented to illustrate the use of the basic behavior genetic model in studying causes…
Descriptors: Adoption, Children, Cognitive Development, Early Childhood Education
Genetic Change and Continuity from Fourteen to Twenty Months: The MacArthur Longitudinal Twin Study.
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Plomin, Robert; And Others – Child Development, 1993
Investigated genetic change and continuity within the domains of temperament, emotion, and cognition and language for 200 pairs of twins assessed at 14 and 20 months of age. Correlations of measures at the two ages indicated that individual differences in the second year of life showed greater change than continuity on most measures. (MDM)
Descriptors: Affective Behavior, Cognitive Development, Genetics, Heredity
The Stability of Genetic Determination from Age 2 to Age 9: A Longitudinal Twin Study.
Lytton, Hugh; And Others – 1987
A longitudinal investigation of the social and cognitive development of male twins was conducted when twins were 2.5 years of age, and again when they were 8- to 10-years-old. This study was designed to re-examine the heritability of the traits studied at the earlier age and, thus, to address the question of the stability of genetic determination.…
Descriptors: Child Rearing, Cognitive Development, Family Relationship, Foreign Countries