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Direct linkWertz, Jasmin; Zavos, Helena M. S.; Matthews, Timothy; Gray, Rebecca; Best-Lane, Janis; Pariante, Carmine M.; Moffitt, Terrie E.; Arseneault, Louise – Child Development, 2016
The aim of this study was to disentangle pervasive from situational antisocial behaviors using multiple informants, and to investigate their genetic and environmental etiologies in preadolescence and across time. Antisocial behaviors were assessed in 2,232 twins from the Environmental Risk (E-Risk) Longitudinal Twin Study at ages 5 and 12.…
Descriptors: Antisocial Behavior, Etiology, Longitudinal Studies, Cohort Analysis
Bezdjian, Serena; Tuvblad, Catherine; Raine, Adrian; Baker, Laura A. – Child Development, 2011
The present study investigated the genetic and environmental covariance between psychopathic personality traits with reactive and proactive aggression in 9- to 10-year-old twins (N = 1,219). Psychopathic personality traits were assessed with the Child Psychopathy Scale (D. R. Lynam, 1997), while aggressive behaviors were assessed using the…
Descriptors: Personality Traits, Aggression, Personality, Genetics
Haworth, Claire M. A.; Dale, Philip S.; Plomin, Robert – Child Development, 2009
During childhood and adolescence, increases in heritability and decreases in shared environmental influences have typically been found for cognitive abilities. A sample of more than 2,500 pairs of twins from the Twins Early Development Study was used to investigate whether a similar pattern would be found for science performance from 9 to 12…
Descriptors: Twins, Etiology, Environmental Influences, Cognitive Ability
Saudino, Kimberly J.; Zapfe, Jeffrey A. – Child Development, 2008
Although genetic influences on individual differences in activity level (AL) are well documented, few studies have considered the etiology of AL from a contextual perspective. In the present study, cross-situational and context-specific genetic effects on individual differences in AL at age 2 were examined. The AL of 312 twin pairs (144…
Descriptors: Twins, Genetics, Etiology, Environmental Influences
Lemelin, Jean-Pascal; Boivin, Michel; Forget-Dubois, Nadine; Dionne, Ginette; Seguin, Jean R.; Brendgen, Mara; Vitaro, Frank; Tremblay, Richard E.; Perusse, Daniel – Child Development, 2007
Using a genetic design of 840 60-month-old twins, this study investigated the genetic and environmental contributions to (a) individual differences in four components of cognitive school readiness, (b) the general ability underlying these four components, and (c) the predictive association between school readiness and school achievement. Results…
Descriptors: School Readiness, Academic Achievement, Genetics, Etiology
Kovas, Yulia; Hayiou-Thomas, Marianna E.; Oliver, Bonamy; Dale, Philip S.; Bishop, Dorothy V. M.; Plomin, Robert – Child Development, 2005
The genetic and environmental etiologies of diverse aspects of language ability and disability, including articulation, phonology, grammar, vocabulary, and verbal memory, were investigated in a U.K. sample of 787 pairs of 4.5-year-old same-sex and opposite-sex twins. Moderate genetic influence was found for all aspects of language in the normal…
Descriptors: Phonology, Language Skills, Environmental Influences, Etiology
Peer reviewedPetrill, Stephen A.; And Others – Child Development, 1998
Examined the origins of high general cognitive ability (g) in twins who were participating in the MacArthur Longitudinal Twin Study. Formed high g groups from the 19th percentile and above at each age. Results suggested increasing genetic influence and increasing genetic stability from 14 to 36 months and substantial genetic influences with…
Descriptors: Cognitive Ability, Cognitive Development, Etiology, Intellectual Development
