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Détail de l'auteur
Auteur B. TONNSEN |
Documents disponibles écrits par cet auteur (2)



Behavioral Markers of Emergent Stranger Anxiety in Infants and Toddlers with Fragile X Syndrome / B. TONNSEN in Journal of Autism and Developmental Disorders, 47-11 (November 2017)
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[article]
Titre : Behavioral Markers of Emergent Stranger Anxiety in Infants and Toddlers with Fragile X Syndrome Type de document : Texte imprimé et/ou numérique Auteurs : B. TONNSEN, Auteur ; J. SCHERR, Auteur ; D. REISINGER, Auteur ; J. ROBERTS, Auteur Article en page(s) : p.3646-3658 Langues : Anglais (eng) Mots-clés : Anxiety Autism Behavior Fragile X syndrome Longitudinal Social approach Index. décimale : PER Périodiques Résumé : Studying anxiety in neurogenetic syndromes may inform the intersection of biological and developmental risks, facilitating effective and targeted interventions. We longitudinally examined stranger fear in infants and toddlers with fragile X syndrome (FXS; n = 46) and typical controls (n = 33), as well as associations between observed stranger fear and rating scales of anxiety, withdrawal and autism features within FXS. Results indicated atypical facial fear in FXS, although facial fear did not index anxiety, autistic symptoms or social withdrawal. Instead, lower withdrawal was associated with decreased distress vocalizations across age, and higher autistic symptoms were associated with lower intensity escape behaviors. Early stranger fear in FXS reflects both typical and atypical dimensions and may help index emergence of social anxiety in this population. En ligne : http://dx.doi.org/10.1007/s10803-017-3270-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=325
in Journal of Autism and Developmental Disorders > 47-11 (November 2017) . - p.3646-3658[article] Behavioral Markers of Emergent Stranger Anxiety in Infants and Toddlers with Fragile X Syndrome [Texte imprimé et/ou numérique] / B. TONNSEN, Auteur ; J. SCHERR, Auteur ; D. REISINGER, Auteur ; J. ROBERTS, Auteur . - p.3646-3658.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 47-11 (November 2017) . - p.3646-3658
Mots-clés : Anxiety Autism Behavior Fragile X syndrome Longitudinal Social approach Index. décimale : PER Périodiques Résumé : Studying anxiety in neurogenetic syndromes may inform the intersection of biological and developmental risks, facilitating effective and targeted interventions. We longitudinally examined stranger fear in infants and toddlers with fragile X syndrome (FXS; n = 46) and typical controls (n = 33), as well as associations between observed stranger fear and rating scales of anxiety, withdrawal and autism features within FXS. Results indicated atypical facial fear in FXS, although facial fear did not index anxiety, autistic symptoms or social withdrawal. Instead, lower withdrawal was associated with decreased distress vocalizations across age, and higher autistic symptoms were associated with lower intensity escape behaviors. Early stranger fear in FXS reflects both typical and atypical dimensions and may help index emergence of social anxiety in this population. En ligne : http://dx.doi.org/10.1007/s10803-017-3270-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=325 Social Avoidance Emerges in Infancy and Persists into Adulthood in Fragile X Syndrome / J. ROBERTS in Journal of Autism and Developmental Disorders, 49-9 (September 2019)
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[article]
Titre : Social Avoidance Emerges in Infancy and Persists into Adulthood in Fragile X Syndrome Type de document : Texte imprimé et/ou numérique Auteurs : J. ROBERTS, Auteur ; Hayley CRAWFORD, Auteur ; A. L. HOGAN, Auteur ; A. FAIRCHILD, Auteur ; B. TONNSEN, Auteur ; A. BREWE, Auteur ; S. O'CONNOR, Auteur ; D. A. ROBERTS, Auteur ; Leonard ABBEDUTO, Auteur Article en page(s) : p.3753-3766 Langues : Anglais (eng) Mots-clés : Autism spectrum disorder Fragile X Infant Social anxiety Social approach Index. décimale : PER Périodiques Résumé : Fragile X syndrome (FXS) is characterized by both social approach and social avoidance. However, the age of emergence and developmental trajectory of social avoidance has not been examined. This study investigates the longitudinal developmental trajectory and dynamic nature of social avoidance in males with FXS from infancy through young adulthood (n = 191). Multiple facets of social avoidance were collected using the Social Avoidance Scale (Roberts et al. 2007, 2009). Overall, 81% of males with FXS displayed social avoidance, which emerged during infancy, increased in severity across childhood, and stabilized through adolescence and early adulthood. An exaggerated "warm up" effect was also observed in FXS. This study delineates the complex profile of social avoidance, a common and impairing behavioral feature of FXS. En ligne : http://dx.doi.org/10.1007/s10803-019-04051-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=405
in Journal of Autism and Developmental Disorders > 49-9 (September 2019) . - p.3753-3766[article] Social Avoidance Emerges in Infancy and Persists into Adulthood in Fragile X Syndrome [Texte imprimé et/ou numérique] / J. ROBERTS, Auteur ; Hayley CRAWFORD, Auteur ; A. L. HOGAN, Auteur ; A. FAIRCHILD, Auteur ; B. TONNSEN, Auteur ; A. BREWE, Auteur ; S. O'CONNOR, Auteur ; D. A. ROBERTS, Auteur ; Leonard ABBEDUTO, Auteur . - p.3753-3766.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 49-9 (September 2019) . - p.3753-3766
Mots-clés : Autism spectrum disorder Fragile X Infant Social anxiety Social approach Index. décimale : PER Périodiques Résumé : Fragile X syndrome (FXS) is characterized by both social approach and social avoidance. However, the age of emergence and developmental trajectory of social avoidance has not been examined. This study investigates the longitudinal developmental trajectory and dynamic nature of social avoidance in males with FXS from infancy through young adulthood (n = 191). Multiple facets of social avoidance were collected using the Social Avoidance Scale (Roberts et al. 2007, 2009). Overall, 81% of males with FXS displayed social avoidance, which emerged during infancy, increased in severity across childhood, and stabilized through adolescence and early adulthood. An exaggerated "warm up" effect was also observed in FXS. This study delineates the complex profile of social avoidance, a common and impairing behavioral feature of FXS. En ligne : http://dx.doi.org/10.1007/s10803-019-04051-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=405