Heritability analysis of the WAIS subtests. A study of twins
IntelligencePublished 1 December 1984
Kristian Tambs
Citations44
SJR quartileQ1
SJR score1.16
SNIP1.22
Generate an AI Snapshot to get a quick, structured summary of this paper.
Study Snapshot
ObjectiveStudy objective
MethodsResearch methodology
PopulationPopulation studied
Sample sizeSample sizes
OutcomesStudy outcomes here
ResultsStudy results comes here
LimitationsResearch study limitations comes here
A concise AI-generated summary of the paper will appear here once you click Generate AI Snapshot.
Abstract
Forty pairs of monozugotic and 40 pairs of dizygotic like-sexed twins were tested on WAIS. Estimates of genetic variance, environmental variance within families, and environmental variance between families were obtained for all subtests, for verbal, performance, and total IQ, and for the "Cohen factors". Estimated genetic variance was somewhat higher, and environmental variance between families was less than usually reported, especially for verbal tests.
Keywords
Psychology
ScienceFamilial Studies of Intelligence: A Review
859 Citations1981Thomas J. Bouchard, Matthew McGue
A summary of 111 studies identified in a survey of the world literature on familial resemblances in measured intelligence reveals a profile of average correlations consistent with a polygenic mode of inheritance.
Heredity, Environment, and Personality: A Study of 850 Sets of Twins
354 Citations1976John C. Loehlin, Robert C. Nichols
Clinical GeneticsPredicting zygosity in Norwegian twin pairs born 1915-1960
252 Citations2008Per Magnus, K. Berg +1 more
The questionnaire data are sufficient to adequately score twin pairs for zygosity in the great majority of cases and could be predicted with satisfactory reliability also for twin pairs where only one of the twins had responded.
IntelligenceIntellectual similarities within families of both adopted and biological children
82 Citations1977Sandra Scarr, Richard A. Weinberg
Behavior GeneticsAspects of the inheritance of intellectual abilities
80 Citations1982Joseph M. Horn, John C. Loehlin +1 more
Genetic and environmental influences on IQ were examined in various subgroups of the Texas Adoption Project sample, including subdivisions by age, sex, and socioeconomic status.
Multivariate Behavioral ResearchA TWIN STUDY OF SPATIAL ABILITY
45 Citations1969Steven G. Vandenberg
It appears that tests requiring three-dimensional manipdadion of drawings demonstrate more frequently a statistically significant hereditary component in the individual differences observed.
Acta geneticae medicae et gemellologiae twin researchCotwin Closeness in Monozygotic and Dizygotic Twins: A Biasing Factor in IQ Heritability Analysis?
22 Citations1985Kristian Tambs, Jon Martin Sundet +1 more
For 98 pairs of MZ twins, four measures indicating degree of cotwin closeness were correlated with absolute differences between IQ scores within pairs, and "Years lived together in childhood home" were positively related to similarity in IQ, whereas subjective feeling of closeness in contact tended to be negatively related to similarities in IQ.
