Twins: Early Mental Development

Mental development was appraised periodically for infant twins, and the twins displayed high within-pair concordance for level of mental development during the first and second years. Twins were also concordant for the spurts and lags in development in this period (monozygotic twins more so than diz...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 1972-02, Vol.175 (4024), p.914-917
Main Author: Wilson, Ronald S.
Format: Article
Language:English
Subjects:
Age Factors
Behavioral genetics
Child Development
Child, Preschool
Developmental biology
Female
Genetic concordance
Humans
Infancy
Infant
Infant development
Infants
Intelligence
Intelligence Tests
Male
Motor Skills
Pregnancy
Socioeconomic Factors
Standard deviation
Test scores
Twins
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Summary:Mental development was appraised periodically for infant twins, and the twins displayed high within-pair concordance for level of mental development during the first and second years. Twins were also concordant for the spurts and lags in development in this period (monozygotic twins more so than dizygotic). From these results it was inferred that infant mental development was primarily determined by the twins' genetic blueprint and that, except in unusual cases, other factors served mainly a supportive function.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.175.4024.914