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Direct linkTosto, Maria Grazia; Garon-Carrier, Gabrielle; Gross, Susan; Petrill, Stephen A.; Malykh, Sergey; Malki, Karim; Hart, Sara A.; Thompson, Lee; Karadaghi, Rezhaw L.; Yakovlev, Nikita; Tikhomirova, Tatiana; Opfer, John E.; Mazzocco, Michèle M. M.; Dionne, Ginette; Brendgen, Mara; Vitaro, Frank; Tremblay, Richard E.; Boivin, Michel; Kovas, Yulia – British Journal of Educational Psychology, 2019
Background: The number line task assesses the ability to estimate numerical magnitudes. People vary greatly in this ability, and this variability has been previously associated with mathematical skills. However, the sources of individual differences in number line estimation and its association with mathematics are not fully understood. Aims: This…
Descriptors: Twins, Individual Differences, Computation, Mathematics Skills
Harlarr, Nicole; De Thorne, Laura Segebart; Smith, Jamie Mahurin; Betancourt, Mariana Aparicio; Petrill, Stephen A. – Journal of Speech, Language, and Hearing Research, 2016
Purpose: We evaluated genetic and environmental contributions to individual differences in language skills during early adolescence, measured by both language sampling and standardized tests, and examined the extent to which these genetic and environmental effects are stable across time. Purpose: We evaluated genetic and environmental…
Descriptors: Genetics, Environmental Influences, Individual Differences, Language Skills
Tosto, Maria Grazia; Hanscombe, Ken B.; Haworth, Claire M. A.; Davis, Oliver S. P.; Petrill, Stephen A.; Dale, Philip S.; Malykh, Sergey; Plomin, Robert; Kovas, Yulia – Developmental Science, 2014
Spatial ability predicts performance in mathematics and eventual expertise in science, technology and engineering. Spatial skills have also been shown to rely on neuronal networks partially shared with mathematics. Understanding the nature of this association can inform educational practices and intervention for mathematical underperformance.…
Descriptors: Spatial Ability, Prediction, Mathematics Achievement, Twins
Wang, Zhe; Hart, Sara Ann; Kovas, Yulia; Lukowski, Sarah; Soden, Brooke; Thompson, Lee A.; Plomin, Robert; McLoughlin, Grainne; Bartlett, Christopher W.; Lyons, Ian M.; Petrill, Stephen A. – Journal of Child Psychology and Psychiatry, 2014
Background: Emerging work suggests that academic achievement may be influenced by the management of affect as well as through efficient information processing of task demands. In particular, mathematical anxiety has attracted recent attention because of its damaging psychological effects and potential associations with mathematical problem solving…
Descriptors: Mathematics Anxiety, Genetics, Environmental Influences, Multivariate Analysis
Malanchini, Margherita; Wang, Zhe; Voronin, Ivan; Schenker, Victoria J.; Plomin, Robert; Petrill, Stephen A.; Kovas, Yulia – Developmental Psychology, 2017
Extant literature has established a consistent association between aspects of reading motivation, such as enjoyment and self-perceived ability, and reading achievement, in that more motivated readers are generally more skilled readers. However, the developmental etiology of this relation is yet to be investigated. The present study explores the…
Descriptors: Reading Motivation, Recreational Reading, Self Concept, Reading Skills
Wolock, Samuel L.; Yates, Andrew; Petrill, Stephen A.; Bohland, Jason W.; Blair, Clancy; Li, Ning; Machiraju, Raghu; Huang, Kun; Bartlett, Christopher W. – Journal of Child Psychology and Psychiatry, 2013
Background: Numerous studies have examined gene × environment interactions (G × E) in cognitive and behavioral domains. However, these studies have been limited in that they have not been able to directly assess differential patterns of gene expression in the human brain. Here, we assessed G × E interactions using two publically available datasets…
Descriptors: Genetics, Smoking, Regression (Statistics), Brain
DeThorne, Laura Segebart; Harlaar, Nicole; Petrill, Stephen A.; Deater-Deckard, Kirby – Journal of Speech, Language, and Hearing Research, 2012
Purpose: The authors examined the longitudinal stability of genetic and environmental influences on children's productive language sample measures during the early school-age years. Method: Twin study methodology with structural equation modeling was used to derive univariate estimates of additive genetic (A), shared environmental (C), and…
Descriptors: Factor Analysis, Genetics, Environmental Influences, Grade 2
Evidence for Shared Genetic Risk between ADHD Symptoms and Reduced Mathematics Ability: A Twin Study
Greven, Corina U.; Kovas, Yulia; Willcutt, Erik G.; Petrill, Stephen A.; Plomin, Robert – Journal of Child Psychology and Psychiatry, 2013
Background: Attention-deficit/hyperactivity disorder (ADHD) symptoms and mathematics ability are associated, but little is known about the genetic and environmental influences underlying this association. Methods: Data came from more than 6,000 twelve-year-old twin pairs from the UK population-representative Twins Early Development Study. Parents…
Descriptors: Attention Deficit Hyperactivity Disorder, Symptoms (Individual Disorders), Genetic Disorders, Environmental Influences
Hart, Sara A.; Petrill, Stephen A.; Kamp Dush, Claire M. – Language, Speech, and Hearing Services in Schools, 2010
Purpose: The present study had two purposes: provide an illustration of use of the National Longitudinal Survey of Youth 1979 Children's (CNLSY; U.S. Department of Labor, 2009) database and use the database to seek convergent evidence regarding the magnitude and significance of genetic effects influencing low and typical performers on measures of…
Descriptors: Reading Comprehension, Siblings, Intervals, Genetics
Harlaar, Nicole; Cutting, Laurie; Deater-Deckard, Kirby; DeThorne, Laura S.; Justice, Laura M.; Schatschneider, Chris; Thompson, Lee A.; Petrill, Stephen A. – Annals of Dyslexia, 2010
We examined the Simple View of reading from a behavioral genetic perspective. Two aspects of word decoding (phonological decoding and word recognition), two aspects of oral language skill (listening comprehension and vocabulary), and reading comprehension were assessed in a twin sample at age 9. Using latent factor models, we found that overlap…
Descriptors: Reading Comprehension, Listening Comprehension, Oral Language, Genetics
Haworth, Claire M. A.; Kovas, Yulia; Harlaar, Nicole; Hayiou-Thomas, Marianna E.; Petrill, Stephen A.; Dale, Philip S.; Plomin, Robert – Journal of Child Psychology and Psychiatry, 2009
Background: Our previous investigation found that the same genes influence poor reading and mathematics performance in 10-year-olds. Here we assess whether this finding extends to language and general cognitive disabilities, as well as replicating the earlier finding for reading and mathematics in an older and larger sample. Methods: Using a…
Descriptors: Twins, Children, Learning Disabilities, Genetics
Petrill, Stephen A.; Hart, Sara A.; Harlaar, Nicole; Logan, Jessica; Justice, Laura M.; Schatschneider, Christopher; Thompson, Lee; DeThorne, Laura S.; Deater-Deckard, Kirby; Cutting, Laurie – Journal of Child Psychology and Psychiatry, 2010
Background: Studies have suggested genetic and environmental influences on overall level of early reading whereas the larger reading literature has shown environmental influences on the rate of growth of early reading skills. This study is the first to examine the genetic and environmental influences on both initial level of performance and rate…
Descriptors: Twins, Phonemes, Early Reading, Home Visits
Hart, Sara A.; Petrill, Stephen A.; DeThorne, Laura S.; Deater-Deckard, Kirby; Thompson, Lee A.; Schatschneider, Chris; Cutting, Laurie E. – Journal of Child Psychology and Psychiatry, 2009
Background: Despite the well-replicated relationship between the home literacy environment and expressive vocabulary, few studies have examined the extent to which the home literacy environment is associated with the development of early vocabulary ability in the context of genetic influences. This study examined the influence of the home literacy…
Descriptors: Twins, Mothers, Home Visits, Emergent Literacy
Glover, Marshaun B.; Mullineaux, Paula Y.; Deater-Deckard, Kirby; Petrill, Stephen A. – Infant and Child Development, 2010
In the current study, we examined parent gender differences in feelings (negativity and positivity) and perceptions of child behavioural and emotional problems in adoptive and biological parent-child dyads. In a sample of 85 families, we used a novel within-family adoption design in which one child was adopted and one child was a biological child…
Descriptors: Emotional Problems, Mothers, Parent Child Relationship, Adjustment (to Environment)
Byrne, Brian; Coventry, William L.; Olson, Richard K.; Wadsworth, Sally J.; Samuelsson, Stefan; Petrill, Stephen A.; Willcutt, Erik G.; Corley, Robin – Journal of Educational Psychology, 2010
It is often assumed that differences in teacher characteristics are a major source of variability in children's educational achievements. We examine this assumption for early literacy achievement by calculating the correlations between pairs of twin children who either shared or did not share a teacher in kindergarten, Grade 1, and Grade 2.…
Descriptors: Twins, Teacher Characteristics, Academic Achievement, Emergent Literacy
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