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Construct Validity of the Autism Classification System of Functioning: Social Communication (ACSF:SC) across Childhood and Adolescence
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Tajik-Parvinchi, Diana; Rosenbaum, Peter; Hidecker, Mary Jo Cooley; Duku, Eric; Zwaigenbaum, Lonnie; Roncadin, Caroline; Georgiades, Stelios; Gentles, Stephen; Fang, Hanna; Di Rezze, Briano – Journal of Autism and Developmental Disorders, 2023
This study examined the construct validity of the Autism Classification System of Functioning: Social Communication (ACSF). Participants included 145 parents of children with autism (2-19 years). The degree of convergent and discriminant validity between parent reported ACSF and subscales from Social Responsiveness Scale 2nd edition and Behavior…
Descriptors: Children, Adolescents, Autism Spectrum Disorders, Parents
The Influence of Bilingual Language Exposure on the Narrative, Social and Pragmatic Abilities of School-Aged Children on the Autism Spectrum
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Beauchamp, Myriam L. H.; Rezzonico, Stefano; Bennett, Terry; Duku, Eric; Georgiades, Stelios; Kerns, Connor; Mirenda, Pat; Richard, Annie; Smith, Isabel M.; Szatmari, Peter; Vaillancourt, Tracy; Waddell, Charlotte; Zaidman-Zait, Anat; Zwaigenbaum, Lonnie; Elsabbagh, Mayada – Journal of Autism and Developmental Disorders, 2023
We examined the narrative abilities of bilingual and monolingual children on the autism spectrum (AS), whether bilinguals presented stronger social and pragmatic language abilities compared to monolinguals, and the link between narrative, social, and pragmatic language abilities. The narrative, social, and pragmatic language skills of school-aged…
Descriptors: Bilingualism, Monolingualism, Language Skills, Children
Trajectories of Symptom Severity in Children with Autism: Variability and Turning Points through the Transition to School
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Georgiades, Stelios; Tait, Peter A.; McNicholas, Paul D.; Duku, Eric; Zwaigenbaum, Lonnie; Smith, Isabel M.; Bennett, Teresa; Elsabbagh, Mayada; Kerns, Connor M.; Mirenda, Pat; Ungar, Wendy J.; Vaillancourt, Tracy; Volden, Joanne; Waddell, Charlotte; Zaidman-Zait, Anat; Gentles, Stephen; Szatmari, Peter – Journal of Autism and Developmental Disorders, 2022
This study examined the trajectories of autistic symptom severity in an inception cohort of 187 children with ASD assessed across four time points from diagnosis to age 10. Trajectory groups were derived using multivariate cluster analysis. A two trajectory/cluster solution was selected. Change in trajectory slopes revealed a "turning…
Descriptors: Symptoms (Individual Disorders), Severity (of Disability), Children, Autism
Adaptation, Content Validity and Reliability of the Autism Classification System of Functioning for Social Communication: From Toddlerhood to Adolescent-Aged Children with Autism
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Di Rezze, Briano; Gentles, Stephen James; Hidecker, Mary Jo Cooley; Zwaigenbaum, Lonnie; Rosenbaum, Peter; Duku, Eric; Georgiades, Stelios; Roncadin, Caroline; Fang, Hanna; Tajik-Parvinchi, Diana; Viveiros, Helena – Journal of Autism and Developmental Disorders, 2022
The Autism Classification System of Functioning: Social Communication (ACSF) describes social communication functioning levels. First developed for preschoolers with ASD, this study tests an expanded age range (2-to-18 years). The ACFS rates the child's typical and best (i.e., capacity) performance. Qualitative methods tested parent and clinician…
Descriptors: Content Validity, Reliability, Autism Spectrum Disorders, Classification
"Best Things": Parents Describe Their Children with Autism Spectrum Disorder over Time
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Cost, Katherine T.; Zaidman-Zait, Anat; Mirenda, Pat; Duku, Eric; Zwaigenbaum, Lonnie; Smith, Isabel M.; Ungar, Wendy J.; Kerns, Connor; Bennett, Theresa; Szatmari, Peter; Georgiades, Stelios; Waddell, Charlotte; Elsabbagh, Mayada; Vaillancourt, Tracy – Journal of Autism and Developmental Disorders, 2021
This study examined parental perceptions of the character traits of children with autism from early childhood to age 11. Parents (n = 153) provided descriptions of the "best things" about their children on the Child Behavior Checklist (CBCL) at ages 3-4, 7-8, and 10-11 years. Descriptions were coded using the framework of the Values in…
Descriptors: Parent Attitudes, Autism, Pervasive Developmental Disorders, Personality Traits
Parent-Reported Rates and Clinical Correlates of Suicidality in Children with Autism Spectrum Disorder: A Longitudinal Study
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Hunsche, Michelle C.; Saqui, Sonja; Mirenda, Pat; Zaidman-Zait, Anat; Bennett, Teresa; Duku, Eric; Elsabbagh, Mayada; Georgiades, Stelios; Smith, Isabel M.; Szatmari, Peter; Ungar, Wendy J.; Vaillancourt, Tracy; Waddell, Charlotte; Zwaigenbaum, Lonnie; Kerns, Connor M. – Journal of Autism and Developmental Disorders, 2020
This study investigated rates of suicidal ideation (SI) and suicidal and/or self-injurious behaviour (SSIB) reported by parents on the Child Behavior Checklist for 178 children with ASD over four annual assessments (ages 7-11 years). Analyses examined the frequency and persistence of SI and SSIB, and the association of SI and SSIB at any time…
Descriptors: Suicide, Self Destructive Behavior, Children, Check Lists
Gender Differences in Pragmatic Communication in School-Aged Children with Autism Spectrum Disorder (ASD)
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Conlon, Olivia; Volden, Joanne; Smith, Isabel M.; Duku, Eric; Zwaigenbaum, Lonnie; Waddell, Charlotte; Szatmari, Peter; Mirenda, Pat; Vaillancourt, Tracy; Bennett, Teresa; Georgiades, Stelios; Elsabbagh, Mayada; Ungar, Wendy. J. – Journal of Autism and Developmental Disorders, 2019
Possible gender differences in manifestations of autism spectrum disorder (ASD) were examined using data on production of narratives. The Expression, Reception and Recall of Narrative Instrument (ERRNI; Bishop, Expression, Reception and Recall of Narrative Instrument, Harcourt assessment, London, 2004) was administered to a sample of matched…
Descriptors: Gender Differences, Pragmatics, Autism, Pervasive Developmental Disorders
Profiles of Social and Coping Resources in Families of Children with Autism Spectrum Disorder: Relations to Parent and Child Outcomes
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Zaidman-Zait, Anat; Mirenda, Pat; Szatmari, Peter; Duku, Eric; Smith, Isabel M.; Vaillancourt, Tracy; Volden, Joanne; Waddell, Charlotte; Bennett, Teresa; Zwaigenbaum, Lonnie; Elsabaggh, Mayada; Georgiades, Stelios – Journal of Autism and Developmental Disorders, 2018
This study described empirically derived profiles of parents' personal and social coping resources in a sample of 207 families of children diagnosed with autism spectrum disorder. Latent Profile Analysis identified four family profiles based on socieoeconomic risk, coping strategy utilization, family functioning, available social supports, and…
Descriptors: Coping, Pervasive Developmental Disorders, Autism, Behavior Problems
Psychometric Properties of the Spence Children's Anxiety Scale: Parent Report in Children with Autism Spectrum Disorder
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Jitlina, Katia; Zumbo, Bruno; Mirenda, Pat; Ford, Laurie; Bennett, Teresa; Georgiades, Stelios; Waddell, Charlotte; Smith, Isabel M.; Volden, Joanne; Duku, Eric; Zwaigenbaum, Lonnie; Szatmari, Peter; Vaillancourt, Tracy; Elsabbagh, Mayada – Journal of Autism and Developmental Disorders, 2017
Although anxiety is frequently reported in children with autism spectrum disorder (ASD), existing anxiety scales are often psychometrically inappropriate for this population. This study examined the internal structure, reliability, convergent and discriminant validity of the Spence Children's Anxiety Scale-Parent Report (SCAS-P; Spence 1999) in…
Descriptors: Autism, Pervasive Developmental Disorders, Psychometrics, Children
Stability and Change in the Cognitive and Adaptive Behaviour Scores of Preschoolers with Autism Spectrum Disorder
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Flanagan, Helen E.; Smith, Isabel M.; Vaillancourt, Tracy; Duku, Eric; Szatmari, Peter; Bryson, Susan; Fombonne, Eric; Mirenda, Pat; Roberts, Wendy; Volden, Joanne; Waddell, Charlotte; Zwaigenbaum, Lonnie; Bennett, Teresa; Elsabbagh, Mayada; Georgiades, Stelios – Journal of Autism and Developmental Disorders, 2015
We examined the stability of cognitive and adaptive behaviour standard scores in children with autism spectrum disorder (ASD) between diagnosis and school entry approximately age 6. IQ increased 18 points in 2-year-olds, 12 points in 3-year-olds, and 9 points in 4-year-olds (N = 281). Adaptive behaviour scores increased 4 points across age groups…
Descriptors: Autism, Pervasive Developmental Disorders, Preschool Children, Mental Retardation
Examination of Bidirectional Relationships between Parent Stress and Two Types of Problem Behavior in Children with Autism Spectrum Disorder
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Zaidman-Zait, Anat; Mirenda, Pat; Duku, Eric; Szatmari, Peter; Georgiades, Stelios; Volden, Joanne; Zwaigenbaum, Lonnie; Vaillancourt, Tracy; Bryson, Susan; Smith, Isabel; Fombonne, Eric; Roberts, Wendy; Waddell, Charlotte; Thompson, Ann – Journal of Autism and Developmental Disorders, 2014
Path analysis within a structural equation modeling framework was employed to examine the relationships between two types of parent stress and children's externalizing and internalizing behaviors over a 4-year period, in a sample of 184 mothers of young children with autism spectrum disorder. Parent stress was measured with the Parenting Stress…
Descriptors: Path Analysis, Structural Equation Models, Stress Variables, Child Rearing
Modeling the Phenotypic Architecture of Autism Symptoms from Time of Diagnosis to Age 6
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Georgiades, Stelios; Boyle, Michael; Szatmari, Peter; Hanna, Steven; Duku, Eric; Zwaigenbaum, Lonnie; Bryson, Susan; Fombonne, Eric; Volden, Joanne; Mirenda, Pat; Smith, Isabel; Roberts, Wendy; Vaillancourt, Tracy; Waddell, Charlotte; Bennett, Teresa; Elsabbagh, Mayada; Thompson, Ann – Journal of Autism and Developmental Disorders, 2014
The latent class structure of autism symptoms from the time of diagnosis to age 6 years was examined in a sample of 280 children with autism spectrum disorder. Factor mixture modeling was performed on 26 algorithm items from the Autism Diagnostic Interview-Revised at diagnosis (Time 1) and again at age 6 (Time 2). At Time 1, a…
Descriptors: Autism, Pervasive Developmental Disorders, Symptoms (Individual Disorders), Children
Investigating the Measurement Properties of the Social Responsiveness Scale in Preschool Children with Autism Spectrum Disorders
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Duku, Eric; Vaillancourt, Tracy; Szatmari, Peter; Georgiades, Stelios; Zwaigenbaum, Lonnie; Smith, Isabel M.; Bryson, Susan; Fombonne, Eric; Mirenda, Pat; Roberts, Wendy; Volden, Joanne; Waddell, Charlotte; Thompson, Ann; Bennett, Teresa – Journal of Autism and Developmental Disorders, 2013
The purpose of this study was to examine the measurement properties of the Social Responsiveness Scale in an accelerated longitudinal sample of 4-year-old preschool children with the complementary approaches of categorical confirmatory factor analysis and Rasch analysis. Measurement models based on the literature and other hypothesized measurement…
Descriptors: Factor Analysis, Validity, Measures (Individuals), Autism
Phenotypic Overlap between Core Diagnostic Features and Emotional/Behavioral Problems in Preschool Children with Autism Spectrum Disorder
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Georgiades, Stelios; Szatmari, Peter; Duku, Eric; Zwaigenbaum, Lonnie; Bryson, Susan; Roberts, Wendy; Fombonne, Eric; Mirenda, Pat; Smith, Isabel; Vaillancourt, Tracy; Volden, Joanne; Waddell, Charlotte; Thompson, Ann – Journal of Autism and Developmental Disorders, 2011
This study examined the phenotypic overlap between core diagnostic features and emotional/behavioral problems in a sample of 335 preschool children with autism spectrum disorder (ASD). Results from principal component analysis (2 components; 49.70% variance explained) suggested substantial phenotypic overlap between core diagnostic features and…
Descriptors: Autism, Preschool Children, Pervasive Developmental Disorders, Behavior Problems
Validating the Repetitive Behavior Scale-Revised in Young Children with Autism Spectrum Disorder
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Mirenda, Pat; Smith, Isabel M.; Vaillancourt, Tracy; Georgiades, Stelios; Duku, Eric; Szatmari, Peter; Bryson, Susan; Fombonne, Eric; Roberts, Wendy; Volden, Joanne; Waddell, Charlotte; Zwaigenbaum, Lonnie – Journal of Autism and Developmental Disorders, 2010
This study examined the factor structure of the Repetitive Behavior Scale-Revised (RBS-R) in a sample of 287 preschool-aged children with autism spectrum disorder (ASD). A confirmatory factor analysis was used to examine six competing structural models. Spearman's rank order correlations were calculated to examine the associations between factor…
Descriptors: Check Lists, Autism, Factor Structure, Young Children
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