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Auteur Kimberly J. SAUDINO |
Documents disponibles écrits par cet auteur (7)
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Callous–unemotional behaviors in early childhood: Genetic and environmental contributions to stability and change / Megan FLOM in Development and Psychopathology, 29-4 (October 2017)
[article]
Titre : Callous–unemotional behaviors in early childhood: Genetic and environmental contributions to stability and change Type de document : Texte imprimé et/ou numérique Auteurs : Megan FLOM, Auteur ; Kimberly J. SAUDINO, Auteur Article en page(s) : p.1227-1234 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : Abstract Callous–unemotional (CU) behaviors demonstrate meaningful individual differences in early childhood, even in nonclinical samples with low mean levels of CU, but the factors underlying this variation have not been examined. This study investigated genetic and environmental contributions to individual differences and to sources of continuity and change in CU in toddler twins (145 monozygotic, 169 dizygotic) assessed at ages 2 and 3 years. CU, as assessed by the Child Behavior Checklist 1.5–5 (Achenbach & Rescorla, 2000), was moderately stable across age (r = .45, p < .0001). Longitudinal biometric analyses revealed genetic and nonshared environmental influences on CU at both ages, with no significant contribution from shared environmental factors. Stability from age 2 to 3 was due to genetic factors, whereas change was due to both genetic and nonshared environmental influences. This genetic and nonshared environmental change was substantial, suggesting malleability of CU in early childhood. Over 50% of the genetic influences and 100% of the nonshared environmental influences on CU at age 3 were independent of those that operated at age 2. Implications of novel sources of variance across age are discussed. En ligne : http://dx.doi.org/10.1017/s0954579416001267 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=312
in Development and Psychopathology > 29-4 (October 2017) . - p.1227-1234[article] Callous–unemotional behaviors in early childhood: Genetic and environmental contributions to stability and change [Texte imprimé et/ou numérique] / Megan FLOM, Auteur ; Kimberly J. SAUDINO, Auteur . - p.1227-1234.
Langues : Anglais (eng)
in Development and Psychopathology > 29-4 (October 2017) . - p.1227-1234
Index. décimale : PER Périodiques Résumé : Abstract Callous–unemotional (CU) behaviors demonstrate meaningful individual differences in early childhood, even in nonclinical samples with low mean levels of CU, but the factors underlying this variation have not been examined. This study investigated genetic and environmental contributions to individual differences and to sources of continuity and change in CU in toddler twins (145 monozygotic, 169 dizygotic) assessed at ages 2 and 3 years. CU, as assessed by the Child Behavior Checklist 1.5–5 (Achenbach & Rescorla, 2000), was moderately stable across age (r = .45, p < .0001). Longitudinal biometric analyses revealed genetic and nonshared environmental influences on CU at both ages, with no significant contribution from shared environmental factors. Stability from age 2 to 3 was due to genetic factors, whereas change was due to both genetic and nonshared environmental influences. This genetic and nonshared environmental change was substantial, suggesting malleability of CU in early childhood. Over 50% of the genetic influences and 100% of the nonshared environmental influences on CU at age 3 were independent of those that operated at age 2. Implications of novel sources of variance across age are discussed. En ligne : http://dx.doi.org/10.1017/s0954579416001267 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=312 Genetic and environmental influences on temperament development across the preschool period / Chang LIU in Journal of Child Psychology and Psychiatry, 64-1 (January 2023)
[article]
Titre : Genetic and environmental influences on temperament development across the preschool period Type de document : Texte imprimé et/ou numérique Auteurs : Chang LIU, Auteur ; Yao ZHENG, Auteur ; Jody M. GANIBAN, Auteur ; Kimberly J. SAUDINO, Auteur Article en page(s) : p.59-70 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : Background Preschoolers' temperament characteristics are associated with children's long-term development. Such links underscore the importance of understanding factors that shape temperament during preschool. This is the first study to examine genetic and environmental sources of developmental growth in three temperament dimensions: surgency, negative affectivity, and effortful control, during the preschool period. Methods Biometric latent growth curve modeling was used to examine genetic, shared, and nonshared environmental contributions to the invariant level of and developmental growth in temperament, using a sample of 310 same-sex twin pairs (MZ=123, DZ=187) assessed at 3, 4, and 5 years of age. Temperament was assessed using primary caregiver's report on the Child Behavior Questionnaire-Short Form. Results All three temperament dimensions demonstrated linear increases from ages 3 to 5 years. The invariant levels of all three temperament dimensions were explained by genetic and nonshared environmental factors. Growth in surgency was fully explained by nonshared environmental factors, while growth in negative affectivity was mainly explained by genetic factors. Growth in effortful control was explained by genetic and nonshared environmental factors, although neither were significant due to large bootstrap standard errors. For negative affectivity and effortful control, the genetic factors that contributed to developmental growth were independent from those associated with their invariant levels. Conclusions Collectively, these findings indicate that both genetic and nonshared environmental factors play important roles in the invariant levels of temperament. Findings also accord a critical role of children's nonshared environment in the development of surgency and to a lesser extent negative affectivity and effortful control. It is also notable that novel genetic effects contribute to developmental growth in negative affectivity and effortful control as children age, emphasizing the importance of integrating developmental models in genetic research. En ligne : https://doi.org/10.1111/jcpp.13667 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=490
in Journal of Child Psychology and Psychiatry > 64-1 (January 2023) . - p.59-70[article] Genetic and environmental influences on temperament development across the preschool period [Texte imprimé et/ou numérique] / Chang LIU, Auteur ; Yao ZHENG, Auteur ; Jody M. GANIBAN, Auteur ; Kimberly J. SAUDINO, Auteur . - p.59-70.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 64-1 (January 2023) . - p.59-70
Index. décimale : PER Périodiques Résumé : Background Preschoolers' temperament characteristics are associated with children's long-term development. Such links underscore the importance of understanding factors that shape temperament during preschool. This is the first study to examine genetic and environmental sources of developmental growth in three temperament dimensions: surgency, negative affectivity, and effortful control, during the preschool period. Methods Biometric latent growth curve modeling was used to examine genetic, shared, and nonshared environmental contributions to the invariant level of and developmental growth in temperament, using a sample of 310 same-sex twin pairs (MZ=123, DZ=187) assessed at 3, 4, and 5 years of age. Temperament was assessed using primary caregiver's report on the Child Behavior Questionnaire-Short Form. Results All three temperament dimensions demonstrated linear increases from ages 3 to 5 years. The invariant levels of all three temperament dimensions were explained by genetic and nonshared environmental factors. Growth in surgency was fully explained by nonshared environmental factors, while growth in negative affectivity was mainly explained by genetic factors. Growth in effortful control was explained by genetic and nonshared environmental factors, although neither were significant due to large bootstrap standard errors. For negative affectivity and effortful control, the genetic factors that contributed to developmental growth were independent from those associated with their invariant levels. Conclusions Collectively, these findings indicate that both genetic and nonshared environmental factors play important roles in the invariant levels of temperament. Findings also accord a critical role of children's nonshared environment in the development of surgency and to a lesser extent negative affectivity and effortful control. It is also notable that novel genetic effects contribute to developmental growth in negative affectivity and effortful control as children age, emphasizing the importance of integrating developmental models in genetic research. En ligne : https://doi.org/10.1111/jcpp.13667 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=490 Genetic influences on mechanically-assessed activity level in children / Alexis C. FRAZIER-WOOD in Journal of Child Psychology and Psychiatry, 48-7 (July 2007)
[article]
Titre : Genetic influences on mechanically-assessed activity level in children Type de document : Texte imprimé et/ou numérique Auteurs : Alexis C. FRAZIER-WOOD, Auteur ; Kimberly J. SAUDINO, Auteur ; Hannah ROGERS, Auteur ; Philip ASHERSON, Auteur ; Jonna KUNTSI, Auteur Année de publication : 2007 Article en page(s) : p.695–702 Langues : Anglais (eng) Mots-clés : Activity-level actigraph etiology heritability twin-study genetic-effects attention-deficit-hyperactivity-disorder Index. décimale : PER Périodiques Résumé : Background: Activity level is an important component of children's temperament, as well as being part of the core symptom domain of hyperactivity-impulsivity within attention deficit hyperactivity disorder (ADHD). Yet it is poorly understood, due partly to limitations on parent and teacher ratings, which are typically used as measurements of these symptoms.
Methods: We aimed to study the etiology of objectively-measured activity level across two situations, using actigraphs. A population-based sample of 463 7–9-year-old twin pairs were assessed individually both when apart undergoing laboratory-based cognitive testing and when together during a break in testing.
Results: Heritability of activity level was estimated as 24% during the test session and at 30% during the break in testing. Shared environmental influences accounted for 27% of the variance in activity level during the test session and 42% of activity level measured during the break. A genetic correlation of 1.0 indicated that the same genes influenced activity level across the two situations, justifying the use of a composite measure of the two situations. This produced a heritability estimate of 36%.
Conclusions: Objectively-measured activity level shows a moderate degree of genetic influence, with a common set of genes influencing activity level across situations. This supports the use of actigraphs as an additional source of information in studies that aim to improve phenotype definition for molecular genetic studies of activity level and ADHD.En ligne : http://dx.doi.org/10.1111/j.1469-7610.2007.01739.x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=142
in Journal of Child Psychology and Psychiatry > 48-7 (July 2007) . - p.695–702[article] Genetic influences on mechanically-assessed activity level in children [Texte imprimé et/ou numérique] / Alexis C. FRAZIER-WOOD, Auteur ; Kimberly J. SAUDINO, Auteur ; Hannah ROGERS, Auteur ; Philip ASHERSON, Auteur ; Jonna KUNTSI, Auteur . - 2007 . - p.695–702.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 48-7 (July 2007) . - p.695–702
Mots-clés : Activity-level actigraph etiology heritability twin-study genetic-effects attention-deficit-hyperactivity-disorder Index. décimale : PER Périodiques Résumé : Background: Activity level is an important component of children's temperament, as well as being part of the core symptom domain of hyperactivity-impulsivity within attention deficit hyperactivity disorder (ADHD). Yet it is poorly understood, due partly to limitations on parent and teacher ratings, which are typically used as measurements of these symptoms.
Methods: We aimed to study the etiology of objectively-measured activity level across two situations, using actigraphs. A population-based sample of 463 7–9-year-old twin pairs were assessed individually both when apart undergoing laboratory-based cognitive testing and when together during a break in testing.
Results: Heritability of activity level was estimated as 24% during the test session and at 30% during the break in testing. Shared environmental influences accounted for 27% of the variance in activity level during the test session and 42% of activity level measured during the break. A genetic correlation of 1.0 indicated that the same genes influenced activity level across the two situations, justifying the use of a composite measure of the two situations. This produced a heritability estimate of 36%.
Conclusions: Objectively-measured activity level shows a moderate degree of genetic influence, with a common set of genes influencing activity level across situations. This supports the use of actigraphs as an additional source of information in studies that aim to improve phenotype definition for molecular genetic studies of activity level and ADHD.En ligne : http://dx.doi.org/10.1111/j.1469-7610.2007.01739.x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=142 Less imitation of arbitrary actions is a specific developmental precursor to callous-unemotional traits in early childhood / Nicholas J. WAGNER in Journal of Child Psychology and Psychiatry, 61-7 (July 2020)
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Titre : Less imitation of arbitrary actions is a specific developmental precursor to callous-unemotional traits in early childhood Type de document : Texte imprimé et/ou numérique Auteurs : Nicholas J. WAGNER, Auteur ; Rebecca WALLER, Auteur ; Megan FLOM, Auteur ; Samuel RONFARD, Auteur ; Susan FENSTERMACHER, Auteur ; Kimberly J. SAUDINO, Auteur Article en page(s) : p.818-825 Langues : Anglais (eng) Mots-clés : Behavior problems callous-unemotional traits developmental psychopathology social behavior Index. décimale : PER Périodiques Résumé : OBJECTIVE: Callous-unemotional (CU) traits in early childhood explain heterogeneity within conduct problems and are associated with higher risk for later diagnoses of childhood disruptive behavior disorders and antisocial behavior in adulthood. Emerging research implicates impairments in affiliative processes in the etiology of CU traits. The current study tests whether the imitation of intentional actions with no functional significance -a behavior that supports the acquisition of social conventions and affiliative bonds, is a specific developmental precursor to CU traits in early childhood. METHODS: Data came from a longitudinal twin study of 628 children (Age 2: 47% females; Age 3: 44.9% females) with observations of arbitrary (i.e., nonfunctional actions) and instrumental (i.e., functional actions) imitation and parent reports of CU traits and oppositional defiant (ODD) behaviors at ages 2 and 3. RESULTS: Lower arbitrary imitation at age 2, but not instrumental imitation, was related to increases in CU traits from ages 2 to 3 (? = -.10, p = .02). CONCLUSIONS: These findings establish early social and affiliative processes in the etiology of CU traits, highlighting that novel personalized treatment and intervention strategies for CU traits may benefit from targeting these processes to help reduce CU traits and risk for persistent conduct problems in children. En ligne : http://dx.doi.org/10.1111/jcpp.13182 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=429
in Journal of Child Psychology and Psychiatry > 61-7 (July 2020) . - p.818-825[article] Less imitation of arbitrary actions is a specific developmental precursor to callous-unemotional traits in early childhood [Texte imprimé et/ou numérique] / Nicholas J. WAGNER, Auteur ; Rebecca WALLER, Auteur ; Megan FLOM, Auteur ; Samuel RONFARD, Auteur ; Susan FENSTERMACHER, Auteur ; Kimberly J. SAUDINO, Auteur . - p.818-825.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 61-7 (July 2020) . - p.818-825
Mots-clés : Behavior problems callous-unemotional traits developmental psychopathology social behavior Index. décimale : PER Périodiques Résumé : OBJECTIVE: Callous-unemotional (CU) traits in early childhood explain heterogeneity within conduct problems and are associated with higher risk for later diagnoses of childhood disruptive behavior disorders and antisocial behavior in adulthood. Emerging research implicates impairments in affiliative processes in the etiology of CU traits. The current study tests whether the imitation of intentional actions with no functional significance -a behavior that supports the acquisition of social conventions and affiliative bonds, is a specific developmental precursor to CU traits in early childhood. METHODS: Data came from a longitudinal twin study of 628 children (Age 2: 47% females; Age 3: 44.9% females) with observations of arbitrary (i.e., nonfunctional actions) and instrumental (i.e., functional actions) imitation and parent reports of CU traits and oppositional defiant (ODD) behaviors at ages 2 and 3. RESULTS: Lower arbitrary imitation at age 2, but not instrumental imitation, was related to increases in CU traits from ages 2 to 3 (? = -.10, p = .02). CONCLUSIONS: These findings establish early social and affiliative processes in the etiology of CU traits, highlighting that novel personalized treatment and intervention strategies for CU traits may benefit from targeting these processes to help reduce CU traits and risk for persistent conduct problems in children. En ligne : http://dx.doi.org/10.1111/jcpp.13182 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=429 Low social affiliation predicts increases in callous-unemotional behaviors in early childhood / S. PERLSTEIN in Journal of Child Psychology and Psychiatry, 63-1 (January 2022)
[article]
Titre : Low social affiliation predicts increases in callous-unemotional behaviors in early childhood Type de document : Texte imprimé et/ou numérique Auteurs : S. PERLSTEIN, Auteur ; R. WALLER, Auteur ; N. J. WAGNER, Auteur ; Kimberly J. SAUDINO, Auteur Article en page(s) : p.109-117 Langues : Anglais (eng) Mots-clés : Child Behavior Child, Preschool Conduct Disorder Emotions Empathy Female Humans Longitudinal Studies Male Parenting Reproducibility of Results Callous-unemotional conduct problems parenting psychopathy social affiliation Index. décimale : PER Périodiques Résumé : BACKGROUND: Callous-unemotional (CU) behaviors predict risk for aggression and rule-breaking. Low social affiliation (i.e. reduced motivation for and enjoyment of social closeness) is hypothesized to be a phenotypic marker for CU behaviors in early childhood. However, studies need to establish observational methods to objectively assess social affiliation as well as to establish parenting practices that can buffer pathways from low social affiliation to CU behaviors. METHODS: Using data from a longitudinal twin study of 628 children (age 2, 47% females; age 3, 44.9% females), we examined reciprocal associations between observed social affiliation, CU behaviors, and oppositional-defiant behaviors. We tested whether positive parenting moderated associations over time. RESULTS: We established that an observed measure of social affiliation derived from the Bayley's Behavior Rating Scale and Infant Behavior Record showed high inter-rater reliability and expected convergence with parent-reported temperament measures. Lower social affiliation at age 2 uniquely predicted CU behaviors, but not oppositional-defiant behaviors, at age 3. Finally, low social affiliation at age 2 predicted CU behaviors at age 3 specifically among children who experienced low, but not high, levels of parental positivity. CONCLUSIONS: An objective rating scale that is already widely used in pediatric settings reliably indexes low social affiliation and risk for CU behaviors. The dynamic interplay between parenting and low child social affiliation represents an important future target for novel individual- and dyadic-targeted treatments to reduce risk for CU behaviors. En ligne : http://dx.doi.org/10.1111/jcpp.13466 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=456
in Journal of Child Psychology and Psychiatry > 63-1 (January 2022) . - p.109-117[article] Low social affiliation predicts increases in callous-unemotional behaviors in early childhood [Texte imprimé et/ou numérique] / S. PERLSTEIN, Auteur ; R. WALLER, Auteur ; N. J. WAGNER, Auteur ; Kimberly J. SAUDINO, Auteur . - p.109-117.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 63-1 (January 2022) . - p.109-117
Mots-clés : Child Behavior Child, Preschool Conduct Disorder Emotions Empathy Female Humans Longitudinal Studies Male Parenting Reproducibility of Results Callous-unemotional conduct problems parenting psychopathy social affiliation Index. décimale : PER Périodiques Résumé : BACKGROUND: Callous-unemotional (CU) behaviors predict risk for aggression and rule-breaking. Low social affiliation (i.e. reduced motivation for and enjoyment of social closeness) is hypothesized to be a phenotypic marker for CU behaviors in early childhood. However, studies need to establish observational methods to objectively assess social affiliation as well as to establish parenting practices that can buffer pathways from low social affiliation to CU behaviors. METHODS: Using data from a longitudinal twin study of 628 children (age 2, 47% females; age 3, 44.9% females), we examined reciprocal associations between observed social affiliation, CU behaviors, and oppositional-defiant behaviors. We tested whether positive parenting moderated associations over time. RESULTS: We established that an observed measure of social affiliation derived from the Bayley's Behavior Rating Scale and Infant Behavior Record showed high inter-rater reliability and expected convergence with parent-reported temperament measures. Lower social affiliation at age 2 uniquely predicted CU behaviors, but not oppositional-defiant behaviors, at age 3. Finally, low social affiliation at age 2 predicted CU behaviors at age 3 specifically among children who experienced low, but not high, levels of parental positivity. CONCLUSIONS: An objective rating scale that is already widely used in pediatric settings reliably indexes low social affiliation and risk for CU behaviors. The dynamic interplay between parenting and low child social affiliation represents an important future target for novel individual- and dyadic-targeted treatments to reduce risk for CU behaviors. En ligne : http://dx.doi.org/10.1111/jcpp.13466 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=456 The genetic etiology of inhibitory control and behavior problems at 24 months of age / Jeffrey R. GAGNE in Journal of Child Psychology and Psychiatry, 52-11 (November 2011)
PermalinkTipping points? Curvilinear associations between activity level and mental development in toddlers / Megan FLOM in Journal of Child Psychology and Psychiatry, 58-5 (May 2017)
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