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Rice, Mabel L.; Taylor, Catherine L.; Zubrick, Stephen R.; Hoffman, Lesa; Earnest, Kathleen K. – Journal of Speech, Language, and Hearing Research, 2020
Purpose: Early language and speech acquisition can be delayed in twin children, a twinning effect that diminishes between 4 and 6 years of age in a population-based sample. The purposes of this study were to examine how twinning effects influence the identification of children with language impairments at 4 and 6 years of age, comparing children…
Descriptors: Language Impairments, Young Children, Twins, Genetics
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Gagne, Jeffrey R.; Saudino, Kimberly J. – Developmental Psychology, 2016
Parent- and lab-based observer ratings were employed to examine genetic and environmental influences on continuity and change in inhibitory control (IC) in over 300 twin-pairs assessed longitudinally at 2 and 3 years of age. Genetic influences accounted for approximately 60% of the variance in parent-rated IC at both ages. Although many of the…
Descriptors: Genetics, Twins, Young Children, Inhibition
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Saudino, Kimberly J. – Child Development, 2012
Actigraphs and parent and observer ratings were used to explore genetic influences on continuity and change in activity level (AL) in early childhood. Over 300 pairs of twins wore actigraphs for a 48-hr period in the home and laboratory at ages 2 and 3. AL was genetically influenced at both ages with little evidence of differential heritability…
Descriptors: Physical Activity Level, Twins, Young Children, Genetics
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Smith, Jamie Mahurin; DeThorne, Laura Segebart; Logan, Jessica A. R.; Channell, Ron W.; Petrill, Stephen A. – Journal of Speech, Language, and Hearing Research, 2014
Purpose: The existing literature on language outcomes in children born prematurely focuses almost exclusively on standardized test scores rather than discourse-level abilities. The authors of this study looked longitudinally at school-age language outcomes and potential moderating variables for a group of twins born prematurely versus a control…
Descriptors: Premature Infants, Language Skills, Longitudinal Studies, Twins
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Rhee, Soo Hyun; Friedman, Naomi P.; Boeldt, Debra L.; Corley, Robin P.; Hewitt, John. K.; Knafo, Ariel; Lahey, Benjamin B.; Robinson, JoAnn; Van Hulle, Carol A.; Waldman, Irwin D.; Young, Susan E.; Zahn-Waxler, Carolyn – Journal of Child Psychology and Psychiatry, 2013
Background: Prediction of antisocial behavior is important, given its adverse impact on both the individuals engaging in antisocial behavior and society. Additional research identifying early predictors of future antisocial behavior, or antisocial propensity, is needed. The present study tested the hypothesis that both concern for others and…
Descriptors: Antisocial Behavior, Predictor Variables, Altruism, Prediction
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Goldsmith, H. H.; Gottesman, I. I. – Child Development, 1981
Descriptors: Age Differences, Behavior Development, Genetics, Longitudinal Studies
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Roudsari, Bahman S.; Utter, Garth H.; Kernic, Mary A.; Mueller, Beth A. – Journal of Early Childhood Research, 2006
The incidence of twin births in the United States (US) has increased more than 65 per cent since 1980. However, the risk of injury to multiple-birth children is unknown. We sought to compare the risk of injury-related hospitalization and death between multiples and singletons. We conducted a retrospective cohort study using linked birth…
Descriptors: Twins, Body Weight, Marital Status, Injuries