NotesFAQContact Us
Collection
Advanced
Search Tips
Showing all 9 results Save | Export
Peer reviewed Peer reviewed
Direct linkDirect link
Engelhardt, Laura E.; Church, Jessica A.; Paige Harden, K.; Tucker-Drob, Elliot M. – Developmental Science, 2019
Behavioral and molecular genetic research has established that child cognitive ability and academic performance are substantially heritable, but genetic variation does not account for all of the stratification of cognitive and academic outcomes across families. Which specific contexts and experiences contribute to these "shared…
Descriptors: Cognitive Ability, Academic Achievement, Twins, Genetics
Peer reviewed Peer reviewed
Direct linkDirect link
Brooker, Rebecca J.; Buss, Kristin A.; Lemery-Chalfant, Kathryn; Aksan, Nazan; Davidson, Richard J.; Goldsmith, H. Hill – Developmental Science, 2013
Despite implications that stranger fear is an important aspect of developing behavioral inhibition, a known risk factor for anxiety, normative and atypical developmental trajectories of stranger fear across infancy and toddlerhood remain understudied. We used a large, longitudinal data set (N = 1285) including multi-trait, multi-method assessments…
Descriptors: Fear, Infants, Toddlers, Infant Behavior
Peer reviewed Peer reviewed
Direct linkDirect link
Tucker-Drob, Elliot M.; Harden, K. Paige – Developmental Science, 2012
Parenting is traditionally conceptualized as an exogenous environment that affects child development. However, children can also influence the quality of parenting that they receive. Using longitudinal data from 650 identical and fraternal twin pairs, we found that, controlling for cognitive ability at age 2 years, cognitive stimulation by parents…
Descriptors: Video Technology, Twins, Stimulation, Child Rearing
Peer reviewed Peer reviewed
Direct linkDirect link
Saudino, Kimberly J. – Developmental Science, 2009
Activity level (AL) is a highly salient feature of child behaviour that has been linked to developmental outcome. Twin studies of parent-rated, observer-rated and mechanically assessed AL in childhood find that AL is genetically influenced. Few studies, however, consider whether different methods of assessing AL have a shared genetic etiology.…
Descriptors: Twins, Genetics, Measurement Techniques, Parents
Peer reviewed Peer reviewed
Direct linkDirect link
Hoekstra, Rosa A.; Bartels, Meike; van Leeuwen, Marieke; Boomsma, Dorret I. – Developmental Science, 2009
The etiology of individual differences in general verbal ability, verbal learning and letter and category fluency were examined in two independent samples of 9- and 18-year-old twin pairs and their siblings. In both age groups, we observed strong familial resemblance for general verbal ability and moderate familial resemblance for verbal learning,…
Descriptors: Twins, Verbal Learning, Late Adolescents, Genetics
Peer reviewed Peer reviewed
Direct linkDirect link
Petrill, Stephen A.; Deater-Deckard, Kirby – Developmental Science, 2004
Prior research suggests shared environmental influences on cognitive performance are important in early childhood. However, few studies have attempted to identify the factors comprising this shared environmental variance. To address this issue, we examined the covariance between task orientation, parental warmth, socioeconomic status and general…
Descriptors: Twins, Young Children, Environmental Influences, Cognitive Ability
Peer reviewed Peer reviewed
Direct linkDirect link
Ronald, Angelica; Happe, Francesca; Plomin, Robert – Developmental Science, 2005
Two types of behaviours shown in children--those reflecting social impairment and nonsocial obsessive repetitive behaviours--are central to defining and diagnosing autism spectrum disorders (ASDs). Parent and teacher data on social and nonsocial behaviours were obtained from a community sample of greater than 3000 7-year-old twin pairs. Social and…
Descriptors: Twins, Autism, Genetics, Individual Differences
Peer reviewed Peer reviewed
Direct linkDirect link
Deater-Deckard, Kirby; Petrill, Stephen A.; Thompson, Lee A.; DeThorne, Laura S. – Developmental Science, 2005
Task persistence, measured by a composite score of independent teacher, tester and observer reports, was examined using behavioral genetic analysis. Participants included 92 monozygotic and 137 same-sex dizygotic twin pairs in Kindergarten or 1st grade (4.3 to 7.9 years old). Task persistence was widely distributed, higher among older children,…
Descriptors: Twins, Persistence, Standardized Tests, Genetics
Peer reviewed Peer reviewed
Direct linkDirect link
Asbury, Kathryn; Dunn, Judith F.; Plomin, Robert – Developmental Science, 2006
This longitudinal monozygotic (MZ) twin differences study explored associations between birthweight and early family environment and teacher-rated behaviour problems and academic achievement at age 7. MZ differences in anxiety, hyperactivity, conduct problems, peer problems and academic achievement correlated significantly with MZ differences in…
Descriptors: Behavior Problems, Academic Achievement, Hyperactivity, Effect Size