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Direct linkWomack, Sean R.; Beam, Christopher R.; Davis, Deborah Winders; Finkel, Deborah; Turkheimer, Eric – Developmental Psychology, 2022
Twins regularly score nearly a standard deviation below the population mean on standardized measures of cognitive development in infancy but recover to the population mean by early childhood, making rapid gains through the toddler years. To date, only polynomial growth models have been fit to model cognitive recovery across childhood, limiting the…
Descriptors: Twins, Cognitive Ability, Genetics, Environmental Influences
Toseeb, Umar; Oginni, Olakunle Ayokunmi; Dale, Philip S. – Journal of Learning Disabilities, 2022
There is considerable variability in the extent to which young people with developmental language disorder (DLD) experience mental health difficulties. What drives these individual differences remains unclear. In the current article, data from the Twin Early Development Study were used to investigate the genetic and environmental influences on…
Descriptors: Language Impairments, Correlation, Psychopathology, Mental Health
Peer reviewedWilson, Ronald S.; Matheny, Adam P., Jr. – Intelligence, 1983
Assessments of the home environments of 116 families whose twins were participants in a longitudinal study of early mental development were conducted. Predictions of offspring intelligence scores increased from ages six months to six years old. Although home/family variables were related to mental development, so were parental education and SES.…
Descriptors: Environmental Influences, Family (Sociological Unit), Family Influence, Genetics
