NotesFAQContact Us
Collection
Advanced
Search Tips
Showing all 8 results Save | Export
Factor Structure of Repetitive Behaviors across Autism Spectrum Disorder and Attention-Deficit/Hyperactivity Disorder
Peer reviewed Peer reviewed
Direct linkDirect link
Brierley, Noah J.; McDonnell, Christina G.; Parks, Kaitlyn M. A.; Schulz, Samantha E.; Dalal, Tyler C.; Kelley, Elizabeth; Anagnostou, Evdokia; Nicolson, Robert; Georgiades, Stelios; Crosbie, Jennifer; Schachar, Russell; Liu, Xudong; Stevenson, Ryan A. – Journal of Autism and Developmental Disorders, 2021
Restricted interests and repetitive behaviors (RRBs) are core symptoms of autism spectrum disorder (ASD), and commonly occur in attention-deficit/hyperactivity disorder (ADHD). Little is known about how RRBs manifest in ADHD. We quantified and compared factor structures of RRBs in children with ASD (n = 634) or ADHD (n = 448), and related factors…
Descriptors: Factor Structure, Behavior Problems, Repetition, Autism
Profiles of Social and Coping Resources in Families of Children with Autism Spectrum Disorder: Relations to Parent and Child Outcomes
Peer reviewed Peer reviewed
Direct linkDirect link
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
DNA Methylation of the Oxytocin Receptor across Neurodevelopmental Disorders
Peer reviewed Peer reviewed
Direct linkDirect link
Siu, Michelle T.; Goodman, Sarah J.; Yellan, Isaac; Butcher, Darci T.; Jangjoo, Maryam; Grafodatskaya, Daria; Rajendram, Rageen; Lou, Youliang; Zhang, Rujun; Zhao, Chunhua; Nicolson, Rob; Georgiades, Stelios; Szatmari, Peter; Scherer, Stephen W.; Roberts, Wendy; Anagnostou, Evdokia; Weksberg, Rosanna – Journal of Autism and Developmental Disorders, 2021
Many neurodevelopmental disorders (NDDs) share common learning and behavioural impairments, as well as features such as dysregulation of the oxytocin hormone. Here, we examined DNA methylation (DNAm) in the 1st intron of the oxytocin receptor gene, "OXTR," in patients with autism spectrum (ASD), attention deficit and hyperactivity (ADHD)…
Descriptors: Genetics, Autism, Pervasive Developmental Disorders, Biochemistry
An Exploratory Analysis of Predictors of Youth Suicide-Related Behaviors in Autism Spectrum Disorder: Implications for Prevention Science
Peer reviewed Peer reviewed
Direct linkDirect link
McDonnell, Christina G.; DeLucia, Elizabeth A.; Hayden, Elizabeth P.; Anagnostou, Evdokia; Nicolson, Rob; Kelley, Elizabeth; Georgiades, Stelios; Liu, Xudong; Stevenson, Ryan A. – Journal of Autism and Developmental Disorders, 2020
Although autism spectrum disorder (ASD) is associated with significant mental health concerns, little is known about suicidality, particularly among youth. To address this critical gap in the literature, the current study examined the predictive validity of (1) demographics, (2) core autism symptoms, (3) cognitive abilities and adaptive behavior,…
Descriptors: Suicide, Pervasive Developmental Disorders, Predictive Validity, At Risk Persons
Examination of Bidirectional Relationships between Parent Stress and Two Types of Problem Behavior in Children with Autism Spectrum Disorder
Peer reviewed Peer reviewed
Direct linkDirect link
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
Phenotypic Overlap between Core Diagnostic Features and Emotional/Behavioral Problems in Preschool Children with Autism Spectrum Disorder
Peer reviewed Peer reviewed
Direct linkDirect link
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
Brief Report: Repetitive Behaviours in Greek Individuals with Autism Spectrum Disorder
Peer reviewed Peer reviewed
Direct linkDirect link
Georgiades, Stelios; Papageorgiou, Vaya; Anagnostou, Evdokia – Journal of Autism and Developmental Disorders, 2010
The main objective of this study was to examine the factor structure of restricted repetitive behaviours (RRBs) in a sample of 205 Greek individuals with Autism Spectrum Disorder (ASD), using the Repetitive Behavior Scale-Revised (RBS-R). Results show that the structure of RRBs in this Greek sample can be described using a 2-factor solution. The…
Descriptors: Autism, Factor Structure, Foreign Countries, Pervasive Developmental Disorders
Validating the Repetitive Behavior Scale-Revised in Young Children with Autism Spectrum Disorder
Peer reviewed Peer reviewed
Direct linkDirect link
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