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Auteur Cristan FARMER |
Documents disponibles écrits par cet auteur (9)
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Aggression in children with autism spectrum disorders and a clinic-referred comparison group / Cristan FARMER in Autism, 19-3 (April 2015)
[article]
Titre : Aggression in children with autism spectrum disorders and a clinic-referred comparison group Type de document : Texte imprimé et/ou numérique Auteurs : Cristan FARMER, Auteur ; Eric BUTTER, Auteur ; Micah O. MAZUREK, Auteur ; Charles COWAN, Auteur ; Janet LAINHART, Auteur ; Edwin H. Jr COOK, Auteur ; Mary Beth DEWITT, Auteur ; Michael G. AMAN, Auteur Article en page(s) : p.281-291 Langues : Anglais (eng) Mots-clés : aggression autism spectrum disorders Child Behavior Checklist Children’s Scale for Hostility and Aggression: Reactive/Proactive proactive aggression reactive aggression Index. décimale : PER Périodiques Résumé : A gap exists in the literature regarding aggression in autism spectrum disorders and how this behavior compares to other groups. In this multisite study, the Children’s Scale for Hostility and Aggression: Reactive/Proactive and the Aggression subscale of the Child Behavior Checklist were rated for 414 children with autism spectrum disorder (autistic disorder, 69%; pervasive developmental disorder not otherwise specified, 24%; Asperger’s disorder, 7%) and 243 clinic-referred children without autism spectrum disorder, aged 1–21 years (mean age about 7 years). Participants were not selected for aggressive behavior. Relative to the comparison group, children with autism spectrum disorder were reported to have less aggression and were more likely to be rated as reactive rather than proactive. Among all subjects, sex was not associated with aggression; higher IQ/adaptive behavior and older age were associated with more sophisticated types of aggression, while lower scores on IQ, adaptive behavior, and communication measures were associated with more physical aggression. The interaction between demographic variables and diagnosis was significant only for age: younger but not older children with autism spectrum disorder showed less aggression than clinic-referred controls. En ligne : http://dx.doi.org/10.1177/1362361313518995 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=257
in Autism > 19-3 (April 2015) . - p.281-291[article] Aggression in children with autism spectrum disorders and a clinic-referred comparison group [Texte imprimé et/ou numérique] / Cristan FARMER, Auteur ; Eric BUTTER, Auteur ; Micah O. MAZUREK, Auteur ; Charles COWAN, Auteur ; Janet LAINHART, Auteur ; Edwin H. Jr COOK, Auteur ; Mary Beth DEWITT, Auteur ; Michael G. AMAN, Auteur . - p.281-291.
Langues : Anglais (eng)
in Autism > 19-3 (April 2015) . - p.281-291
Mots-clés : aggression autism spectrum disorders Child Behavior Checklist Children’s Scale for Hostility and Aggression: Reactive/Proactive proactive aggression reactive aggression Index. décimale : PER Périodiques Résumé : A gap exists in the literature regarding aggression in autism spectrum disorders and how this behavior compares to other groups. In this multisite study, the Children’s Scale for Hostility and Aggression: Reactive/Proactive and the Aggression subscale of the Child Behavior Checklist were rated for 414 children with autism spectrum disorder (autistic disorder, 69%; pervasive developmental disorder not otherwise specified, 24%; Asperger’s disorder, 7%) and 243 clinic-referred children without autism spectrum disorder, aged 1–21 years (mean age about 7 years). Participants were not selected for aggressive behavior. Relative to the comparison group, children with autism spectrum disorder were reported to have less aggression and were more likely to be rated as reactive rather than proactive. Among all subjects, sex was not associated with aggression; higher IQ/adaptive behavior and older age were associated with more sophisticated types of aggression, while lower scores on IQ, adaptive behavior, and communication measures were associated with more physical aggression. The interaction between demographic variables and diagnosis was significant only for age: younger but not older children with autism spectrum disorder showed less aggression than clinic-referred controls. En ligne : http://dx.doi.org/10.1177/1362361313518995 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=257 Commentary: Lingering questions about the Social Responsiveness Scale short form. A commentary on Sturm et al. (2017) / Aaron J. KAAT in Journal of Child Psychology and Psychiatry, 58-9 (September 2017)
[article]
Titre : Commentary: Lingering questions about the Social Responsiveness Scale short form. A commentary on Sturm et al. (2017) Type de document : Texte imprimé et/ou numérique Auteurs : Aaron J. KAAT, Auteur ; Cristan FARMER, Auteur Article en page(s) : p.1062-1064 Langues : Anglais (eng) Index. décimale : PER Périodiques En ligne : http://dx.doi.org/10.1111/jcpp.12801 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=317
in Journal of Child Psychology and Psychiatry > 58-9 (September 2017) . - p.1062-1064[article] Commentary: Lingering questions about the Social Responsiveness Scale short form. A commentary on Sturm et al. (2017) [Texte imprimé et/ou numérique] / Aaron J. KAAT, Auteur ; Cristan FARMER, Auteur . - p.1062-1064.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 58-9 (September 2017) . - p.1062-1064
Index. décimale : PER Périodiques En ligne : http://dx.doi.org/10.1111/jcpp.12801 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=317 Describing Function in ASD: Using the DSM-5 and Other Methods to Improve Precision / Vanessa H. BAL in Journal of Autism and Developmental Disorders, 47-9 (September 2017)
[article]
Titre : Describing Function in ASD: Using the DSM-5 and Other Methods to Improve Precision Type de document : Texte imprimé et/ou numérique Auteurs : Vanessa H. BAL, Auteur ; Cristan FARMER, Auteur ; Audrey THURM, Auteur Article en page(s) : p.2938-2941 Langues : Anglais (eng) Index. décimale : PER Périodiques En ligne : https://doi.org/10.1007/s10803-017-3204-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=316
in Journal of Autism and Developmental Disorders > 47-9 (September 2017) . - p.2938-2941[article] Describing Function in ASD: Using the DSM-5 and Other Methods to Improve Precision [Texte imprimé et/ou numérique] / Vanessa H. BAL, Auteur ; Cristan FARMER, Auteur ; Audrey THURM, Auteur . - p.2938-2941.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 47-9 (September 2017) . - p.2938-2941
Index. décimale : PER Périodiques En ligne : https://doi.org/10.1007/s10803-017-3204-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=316 Disentangling global and domain-level adaptive behavior trajectories among children with autism spectrum disorder / Cristan FARMER in Journal of Child Psychology and Psychiatry, 64-6 (June 2023)
[article]
Titre : Disentangling global and domain-level adaptive behavior trajectories among children with autism spectrum disorder Type de document : Texte imprimé et/ou numérique Auteurs : Cristan FARMER, Auteur ; Audrey THURM, Auteur ; Emma CONDY, Auteur ; Eric DUKU, Auteur ; Peter SZATMARI, Auteur ; Teresa BENNETT, Auteur ; Mayada ELSABBAGH, Auteur ; Connor M. KERNS, Auteur ; Isabel M. SMITH, Auteur ; Tracy VAILLANCOURT, Auteur ; Anat ZAIDMAN-ZAIT, Auteur ; Lonnie ZWAIGENBAUM, Auteur ; Stelios GEORGIADES, Auteur Article en page(s) : p.868-875 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : Background Heterogeneity in adaptive behavior abilities among people with autism spectrum disorder (ASD) is expressed not only as uneven levels of impairment across domains, but also in the developmental trajectories of adaptive skills. We studied the question of whether, after accounting for global adaptive behavior development, we find evidence of heterogeneity in the trajectories of specific domains of adaptive behavior. Methods A sample of 504 children with ASD was obtained by combining data from two independent natural history studies conducted in North America. We used a factor of curves model to explain growth between 36 and 138?months in Vineland Adaptive Behavior Scales, Second Edition (VABS) age equivalents as a function of domain-specific and global growth processes. Results The domain-specific trajectories in all three domains (Communication, Daily Living Skills, and Socialization) reflected impairment relative to age expectations as well as slower-than-expected growth with age, and the parameters of these trajectories were moderately-to-strongly correlated across domains. The global adaptive behavior trajectory had an initial (36-41?months of age) developmental level of about 22 age-equivalent months, and eventually slowed after initially increasing by about 6 months each year. The global trajectory accounted for the majority of variance in the domain-level processes; however, additional variance remained (14%-38%) in the domain-level intercepts, slopes, and quadratic processes. Conclusions These results extend existing theoretical and empirical support for the hierarchical structure of adaptive behavior to include its development over time in clinical samples of children with ASD. A latent global trajectory may be sufficient to describe the growth of adaptive behavior in children with ASD; however, the remaining domain-specific variability after accounting for global adaptive behavior development allows for the possibility that differential effects of intervention on specific domains may be possible and detectable. En ligne : http://dx.doi.org/https://doi.org/10.1111/jcpp.13741 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=504
in Journal of Child Psychology and Psychiatry > 64-6 (June 2023) . - p.868-875[article] Disentangling global and domain-level adaptive behavior trajectories among children with autism spectrum disorder [Texte imprimé et/ou numérique] / Cristan FARMER, Auteur ; Audrey THURM, Auteur ; Emma CONDY, Auteur ; Eric DUKU, Auteur ; Peter SZATMARI, Auteur ; Teresa BENNETT, Auteur ; Mayada ELSABBAGH, Auteur ; Connor M. KERNS, Auteur ; Isabel M. SMITH, Auteur ; Tracy VAILLANCOURT, Auteur ; Anat ZAIDMAN-ZAIT, Auteur ; Lonnie ZWAIGENBAUM, Auteur ; Stelios GEORGIADES, Auteur . - p.868-875.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 64-6 (June 2023) . - p.868-875
Index. décimale : PER Périodiques Résumé : Background Heterogeneity in adaptive behavior abilities among people with autism spectrum disorder (ASD) is expressed not only as uneven levels of impairment across domains, but also in the developmental trajectories of adaptive skills. We studied the question of whether, after accounting for global adaptive behavior development, we find evidence of heterogeneity in the trajectories of specific domains of adaptive behavior. Methods A sample of 504 children with ASD was obtained by combining data from two independent natural history studies conducted in North America. We used a factor of curves model to explain growth between 36 and 138?months in Vineland Adaptive Behavior Scales, Second Edition (VABS) age equivalents as a function of domain-specific and global growth processes. Results The domain-specific trajectories in all three domains (Communication, Daily Living Skills, and Socialization) reflected impairment relative to age expectations as well as slower-than-expected growth with age, and the parameters of these trajectories were moderately-to-strongly correlated across domains. The global adaptive behavior trajectory had an initial (36-41?months of age) developmental level of about 22 age-equivalent months, and eventually slowed after initially increasing by about 6 months each year. The global trajectory accounted for the majority of variance in the domain-level processes; however, additional variance remained (14%-38%) in the domain-level intercepts, slopes, and quadratic processes. Conclusions These results extend existing theoretical and empirical support for the hierarchical structure of adaptive behavior to include its development over time in clinical samples of children with ASD. A latent global trajectory may be sufficient to describe the growth of adaptive behavior in children with ASD; however, the remaining domain-specific variability after accounting for global adaptive behavior development allows for the possibility that differential effects of intervention on specific domains may be possible and detectable. En ligne : http://dx.doi.org/https://doi.org/10.1111/jcpp.13741 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=504 Factor structure of the VABS-3 Comprehensive Parent/Caregiver form in autistic individuals: Poor fit of three-factor and unidimensional models / Ellen WILKINSON in Autism, 28-3 (March 2024)
[article]
Titre : Factor structure of the VABS-3 Comprehensive Parent/Caregiver form in autistic individuals: Poor fit of three-factor and unidimensional models Type de document : Texte imprimé et/ou numérique Auteurs : Ellen WILKINSON, Auteur ; Cristan FARMER, Auteur ; Evan KLEIMAN, Auteur ; Vanessa H. BAL, Auteur Article en page(s) : p.616-626 Langues : Anglais (eng) Mots-clés : adaptive behavior autism spectrum disorders behavioral measurement Index. décimale : PER Périodiques Résumé : The commonly used Vineland Adaptive Behavior Scales (VABS-3) divides adaptive behavior into three domains comprising three subdomains. The validity of this three-factor structure has not been explored in autistic samples, which are often heterogeneous with respect to language and IQ. Furthermore, although there are two comparable forms, Comprehensive Interview Form and Comprehensive Parent/Caregiver Form (a questionnaire), the original validation was based on interview data. Considering the widespread use of the VABS-3 in autism research, and the increased feasibility of online-administered questionnaires, it is necessary to establish the validity of the Parent/Caregiver form in autistic individuals across a range of abilities. This study aimed to investigate the measurement invariance of the VABS-3 Parent/Caregiver form between a minimally verbal group and verbal group of autistic people; however, poor overall fit of the three-factor structure precluded invariance analyses. Subsequent analyses suggested poor fit in both language and age groups, as well as a unidimensional model. The results of the current study suggest that neither the three-factor or unidimensional model fit the VABS-3 Parent/Caregiver Form, thereby cautioning against interpretation of domain or overall adaptive behavior composite scores in autistic individuals and further encouraging careful consideration of administration format. Lay Abstract Adaptive behavior is a broad set of skills needed to function in everyday life. The Vineland Adaptive Behavior Scales (VABS-3) is commonly used to measure adaptive behavior. It divides adaptive behavior into three domains, Communication, Daily Living Skills, and Socialization, each of which are split into subdomains. Analyses of this three-part structure of the first version of VABS used the instrument as an interview, but now it is done as a questionnaire as well. The structure has not been well supported in samples of autistic people, who often have different strengths and challenges in adaptive behavior compared with non-autistic people. Because adaptive behavior is an important concept in autism research and online-administered questionnaires are increasingly common, it is important to ensure the structure of the VABS-3 Comprehensive Parent/Caregiver Form (VABS-3:CPCF; a questionnaire) works well for autistic individuals across a range of abilities. This study aimed to investigate whether VABS-3:CPCF measures adaptive behavior similarly in verbal and minimally verbal autistic people. However, the data didn?t fit the structure in the first step of the analysis, so this could not be investigated. The next analyses also found the three-domain structure didn?t fit in different age and language groups. In addition, the data didn?t fit a structure combining all the domains into 1 (unidimensional). These results suggest that neither the three-factor or unidimensional structure fit the VABS-3:CPCF, cautioning against interpretation of domain or overall adaptive behavior composite scores in autistic individuals and further encouraging careful consideration of administration format. En ligne : https://dx.doi.org/10.1177/13623613231179288 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=523
in Autism > 28-3 (March 2024) . - p.616-626[article] Factor structure of the VABS-3 Comprehensive Parent/Caregiver form in autistic individuals: Poor fit of three-factor and unidimensional models [Texte imprimé et/ou numérique] / Ellen WILKINSON, Auteur ; Cristan FARMER, Auteur ; Evan KLEIMAN, Auteur ; Vanessa H. BAL, Auteur . - p.616-626.
Langues : Anglais (eng)
in Autism > 28-3 (March 2024) . - p.616-626
Mots-clés : adaptive behavior autism spectrum disorders behavioral measurement Index. décimale : PER Périodiques Résumé : The commonly used Vineland Adaptive Behavior Scales (VABS-3) divides adaptive behavior into three domains comprising three subdomains. The validity of this three-factor structure has not been explored in autistic samples, which are often heterogeneous with respect to language and IQ. Furthermore, although there are two comparable forms, Comprehensive Interview Form and Comprehensive Parent/Caregiver Form (a questionnaire), the original validation was based on interview data. Considering the widespread use of the VABS-3 in autism research, and the increased feasibility of online-administered questionnaires, it is necessary to establish the validity of the Parent/Caregiver form in autistic individuals across a range of abilities. This study aimed to investigate the measurement invariance of the VABS-3 Parent/Caregiver form between a minimally verbal group and verbal group of autistic people; however, poor overall fit of the three-factor structure precluded invariance analyses. Subsequent analyses suggested poor fit in both language and age groups, as well as a unidimensional model. The results of the current study suggest that neither the three-factor or unidimensional model fit the VABS-3 Parent/Caregiver Form, thereby cautioning against interpretation of domain or overall adaptive behavior composite scores in autistic individuals and further encouraging careful consideration of administration format. Lay Abstract Adaptive behavior is a broad set of skills needed to function in everyday life. The Vineland Adaptive Behavior Scales (VABS-3) is commonly used to measure adaptive behavior. It divides adaptive behavior into three domains, Communication, Daily Living Skills, and Socialization, each of which are split into subdomains. Analyses of this three-part structure of the first version of VABS used the instrument as an interview, but now it is done as a questionnaire as well. The structure has not been well supported in samples of autistic people, who often have different strengths and challenges in adaptive behavior compared with non-autistic people. Because adaptive behavior is an important concept in autism research and online-administered questionnaires are increasingly common, it is important to ensure the structure of the VABS-3 Comprehensive Parent/Caregiver Form (VABS-3:CPCF; a questionnaire) works well for autistic individuals across a range of abilities. This study aimed to investigate whether VABS-3:CPCF measures adaptive behavior similarly in verbal and minimally verbal autistic people. However, the data didn?t fit the structure in the first step of the analysis, so this could not be investigated. The next analyses also found the three-domain structure didn?t fit in different age and language groups. In addition, the data didn?t fit a structure combining all the domains into 1 (unidimensional). These results suggest that neither the three-factor or unidimensional structure fit the VABS-3:CPCF, cautioning against interpretation of domain or overall adaptive behavior composite scores in autistic individuals and further encouraging careful consideration of administration format. En ligne : https://dx.doi.org/10.1177/13623613231179288 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=523 Longitudinal study of symptom severity and language in minimally verbal children with autism / Audrey THURM in Journal of Child Psychology and Psychiatry, 56-1 (January 2015)
PermalinkMaking Research Possible: Barriers and Solutions For Those With ASD and ID / Audrey THURM in Journal of Autism and Developmental Disorders, 52-10 (October 2022)
PermalinkMeasurement of Nonverbal IQ in Autism Spectrum Disorder: Scores in Young Adulthood Compared to Early Childhood / Somer L. BISHOP in Journal of Autism and Developmental Disorders, 45-4 (April 2015)
PermalinkPsychometric Study of the Social Responsiveness Scale in Phelan-McDermid Syndrome / Kellie GERGOUDIS in Autism Research, 13-8 (August 2020)
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