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Auteur Theodore JACOB |
Documents disponibles écrits par cet auteur (2)
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Genetic architecture of reciprocal social behavior in toddlers: Implications for heterogeneity in the early origins of autism spectrum disorder / Natasha MARRUS in Development and Psychopathology, 32-4 (October 2020)
[article]
Titre : Genetic architecture of reciprocal social behavior in toddlers: Implications for heterogeneity in the early origins of autism spectrum disorder Type de document : Texte imprimé et/ou numérique Auteurs : Natasha MARRUS, Auteur ; Julia D. GRANT, Auteur ; Brooke HARRIS-OLENAK, Auteur ; Jordan ALBRIGHT, Auteur ; Drew BOLSTER, Auteur ; Jon Randolph HABER, Auteur ; Theodore JACOB, Auteur ; Yi ZHANG, Auteur ; Andrew C. HEATH, Auteur ; Arpana AGRAWAL, Auteur ; John N. CONSTANTINO, Auteur ; Jed T. ELISON, Auteur ; Anne L. GLOWINSKI, Auteur Article en page(s) : p.1190-1205 Langues : Anglais (eng) Mots-clés : quantitative autistic traits reciprocal social behavior toddlers twins vrRSB Index. décimale : PER Périodiques Résumé : Impairment in reciprocal social behavior (RSB), an essential component of early social competence, clinically defines autism spectrum disorder (ASD). However, the behavioral and genetic architecture of RSB in toddlerhood, when ASD first emerges, has not been fully characterized. We analyzed data from a quantitative video-referenced rating of RSB (vrRSB) in two toddler samples: a community-based volunteer research registry (n = 1,563) and an ethnically diverse, longitudinal twin sample ascertained from two state birth registries (n = 714). Variation in RSB was continuously distributed, temporally stable, significantly associated with ASD risk at age 18 months, and only modestly explained by sociodemographic and medical factors (r2 = 9.4%). Five latent RSB factors were identified and corresponded to aspects of social communication or restricted repetitive behaviors, the two core ASD symptom domains. Quantitative genetic analyses indicated substantial heritability for all factors at age 24 months (h2 ? .61). Genetic influences strongly overlapped across all factors, with a social motivation factor showing evidence of newly-emerging genetic influences between the ages of 18 and 24 months. RSB constitutes a heritable, trait-like competency whose factorial and genetic structure is generalized across diverse populations, demonstrating its role as an early, enduring dimension of inherited variation in human social behavior. Substantially overlapping RSB domains, measurable when core ASD features arise and consolidate, may serve as markers of specific pathways to autism and anchors to inform determinants of autism's heterogeneity. En ligne : http://dx.doi.org/10.1017/s0954579420000723 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=433
in Development and Psychopathology > 32-4 (October 2020) . - p.1190-1205[article] Genetic architecture of reciprocal social behavior in toddlers: Implications for heterogeneity in the early origins of autism spectrum disorder [Texte imprimé et/ou numérique] / Natasha MARRUS, Auteur ; Julia D. GRANT, Auteur ; Brooke HARRIS-OLENAK, Auteur ; Jordan ALBRIGHT, Auteur ; Drew BOLSTER, Auteur ; Jon Randolph HABER, Auteur ; Theodore JACOB, Auteur ; Yi ZHANG, Auteur ; Andrew C. HEATH, Auteur ; Arpana AGRAWAL, Auteur ; John N. CONSTANTINO, Auteur ; Jed T. ELISON, Auteur ; Anne L. GLOWINSKI, Auteur . - p.1190-1205.
Langues : Anglais (eng)
in Development and Psychopathology > 32-4 (October 2020) . - p.1190-1205
Mots-clés : quantitative autistic traits reciprocal social behavior toddlers twins vrRSB Index. décimale : PER Périodiques Résumé : Impairment in reciprocal social behavior (RSB), an essential component of early social competence, clinically defines autism spectrum disorder (ASD). However, the behavioral and genetic architecture of RSB in toddlerhood, when ASD first emerges, has not been fully characterized. We analyzed data from a quantitative video-referenced rating of RSB (vrRSB) in two toddler samples: a community-based volunteer research registry (n = 1,563) and an ethnically diverse, longitudinal twin sample ascertained from two state birth registries (n = 714). Variation in RSB was continuously distributed, temporally stable, significantly associated with ASD risk at age 18 months, and only modestly explained by sociodemographic and medical factors (r2 = 9.4%). Five latent RSB factors were identified and corresponded to aspects of social communication or restricted repetitive behaviors, the two core ASD symptom domains. Quantitative genetic analyses indicated substantial heritability for all factors at age 24 months (h2 ? .61). Genetic influences strongly overlapped across all factors, with a social motivation factor showing evidence of newly-emerging genetic influences between the ages of 18 and 24 months. RSB constitutes a heritable, trait-like competency whose factorial and genetic structure is generalized across diverse populations, demonstrating its role as an early, enduring dimension of inherited variation in human social behavior. Substantially overlapping RSB domains, measurable when core ASD features arise and consolidate, may serve as markers of specific pathways to autism and anchors to inform determinants of autism's heterogeneity. En ligne : http://dx.doi.org/10.1017/s0954579420000723 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=433 Rapid video-referenced ratings of reciprocal social behavior in toddlers: a twin study / Natasha MARRUS in Journal of Child Psychology and Psychiatry, 56-12 (December 2015)
[article]
Titre : Rapid video-referenced ratings of reciprocal social behavior in toddlers: a twin study Type de document : Texte imprimé et/ou numérique Auteurs : Natasha MARRUS, Auteur ; Anne L. GLOWINSKI, Auteur ; Theodore JACOB, Auteur ; Ami KLIN, Auteur ; Warren JONES, Auteur ; Caroline E. DRAIN, Auteur ; Kieran E. HOLZHAUER, Auteur ; Vaishnavi HARIPRASAD, Auteur ; Robert T. FITZGERALD, Auteur ; Erika L. MORTENSON, Auteur ; Sayli M. SANT, Auteur ; Lyndsey COLE, Auteur ; Satchel A. SIEGEL, Auteur ; Yi ZHANG, Auteur ; Arpana AGRAWAL, Auteur ; Andrew C. HEATH, Auteur ; John N. CONSTANTINO, Auteur Article en page(s) : p.1338-1346 Langues : Anglais (eng) Mots-clés : Autism reciprocal social behavior video twins toddlers Index. décimale : PER Périodiques Résumé : Background Reciprocal social behavior (RSB) is a developmental prerequisite for social competency, and deficits in RSB constitute a core feature of autism spectrum disorder (ASD). Although clinical screeners categorically ascertain risk of ASD in early childhood, rapid methods for quantitative measurement of RSB in toddlers are not yet established. Such measurements are critical for tracking developmental trajectories and incremental responses to intervention. Methods We developed and validated a 20-min video-referenced rating scale, the video-referenced rating of reciprocal social behavior (vrRSB), for untrained caregivers to provide standardized ratings of quantitative variation in RSB. Parents of 252 toddler twins [Monozygotic (MZ) = 31 pairs, Dizygotic (DZ) = 95 pairs] ascertained through birth records, rated their twins’ RSB at two time points, on average 6 months apart, and completed two developmental measures, the Modified Checklist for Autism in Toddlers (M-CHAT) and the MacArthur Communicative Development Inventory Short Form (MCDI-s). Results Scores on the vrRSB were fully continuously distributed, with excellent 6-month test–retest reliability ([intraclass correlation coefficient] ICC = 0.704, p < .000). MZ twins displayed markedly greater trait concordance than DZ twins, (MZ ICC = 0.863, p < .000, DZ ICC = 0.231, p < .012). VrRSB score distributions were highly distinct for children passing versus failing the M-CHAT (t = ?8.588, df = 31, p < .000), incrementally improved from 18–24 months, and were inversely correlated with receptive and expressive vocabulary on the MCDI-s. Conclusions Like quantitative autistic trait ratings in school-aged children and adults, toddler scores on the vrRSB are continuously distributed and appear highly heritable. These ratings exhibited minimal measurement error, high inter-individual stability, and developmental progression in RSB as children matured from 18–24 months, supporting their potential utility for serially quantifying the severity of early autistic syndromes over time and in response to intervention. In addition, these findings inform the genetic-environmental structure of RSB in early typical development. En ligne : http://dx.doi.org/10.1111/jcpp.12391 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=273
in Journal of Child Psychology and Psychiatry > 56-12 (December 2015) . - p.1338-1346[article] Rapid video-referenced ratings of reciprocal social behavior in toddlers: a twin study [Texte imprimé et/ou numérique] / Natasha MARRUS, Auteur ; Anne L. GLOWINSKI, Auteur ; Theodore JACOB, Auteur ; Ami KLIN, Auteur ; Warren JONES, Auteur ; Caroline E. DRAIN, Auteur ; Kieran E. HOLZHAUER, Auteur ; Vaishnavi HARIPRASAD, Auteur ; Robert T. FITZGERALD, Auteur ; Erika L. MORTENSON, Auteur ; Sayli M. SANT, Auteur ; Lyndsey COLE, Auteur ; Satchel A. SIEGEL, Auteur ; Yi ZHANG, Auteur ; Arpana AGRAWAL, Auteur ; Andrew C. HEATH, Auteur ; John N. CONSTANTINO, Auteur . - p.1338-1346.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 56-12 (December 2015) . - p.1338-1346
Mots-clés : Autism reciprocal social behavior video twins toddlers Index. décimale : PER Périodiques Résumé : Background Reciprocal social behavior (RSB) is a developmental prerequisite for social competency, and deficits in RSB constitute a core feature of autism spectrum disorder (ASD). Although clinical screeners categorically ascertain risk of ASD in early childhood, rapid methods for quantitative measurement of RSB in toddlers are not yet established. Such measurements are critical for tracking developmental trajectories and incremental responses to intervention. Methods We developed and validated a 20-min video-referenced rating scale, the video-referenced rating of reciprocal social behavior (vrRSB), for untrained caregivers to provide standardized ratings of quantitative variation in RSB. Parents of 252 toddler twins [Monozygotic (MZ) = 31 pairs, Dizygotic (DZ) = 95 pairs] ascertained through birth records, rated their twins’ RSB at two time points, on average 6 months apart, and completed two developmental measures, the Modified Checklist for Autism in Toddlers (M-CHAT) and the MacArthur Communicative Development Inventory Short Form (MCDI-s). Results Scores on the vrRSB were fully continuously distributed, with excellent 6-month test–retest reliability ([intraclass correlation coefficient] ICC = 0.704, p < .000). MZ twins displayed markedly greater trait concordance than DZ twins, (MZ ICC = 0.863, p < .000, DZ ICC = 0.231, p < .012). VrRSB score distributions were highly distinct for children passing versus failing the M-CHAT (t = ?8.588, df = 31, p < .000), incrementally improved from 18–24 months, and were inversely correlated with receptive and expressive vocabulary on the MCDI-s. Conclusions Like quantitative autistic trait ratings in school-aged children and adults, toddler scores on the vrRSB are continuously distributed and appear highly heritable. These ratings exhibited minimal measurement error, high inter-individual stability, and developmental progression in RSB as children matured from 18–24 months, supporting their potential utility for serially quantifying the severity of early autistic syndromes over time and in response to intervention. In addition, these findings inform the genetic-environmental structure of RSB in early typical development. En ligne : http://dx.doi.org/10.1111/jcpp.12391 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=273