This study aimed to describe the behavioral profile of individuals with SYNGAP1-ID. Parents/carers of 30 individuals aged 3-18 years old with a diagnosis of SYNGAP1-ID and 21 typically developing individuals completed the Vineland-3 Adaptive Behavior Scale and the Child Behavior Checklist. We found that those with SYNGAP1-ID showed fewer adaptive…

Social adaptive functioning is notably compromised and may be further impaired by aggressive behavior in children with autism spectrum disorder (ASD). This study examined the association between aggressive behavior and social adaptive skills in children with ASD and the contribution of aggressive behavior to social adaptive skills in a combined…

In the current study, we examined adaptive skills and trajectories over time in 257 individuals with Angelman syndrome (AS) using the Vineland Adaptive Behavior Scales, 2nd Edition. Multilevel linear models were used to examine differences between molecular subtypes over time, from one year to 13 years of age, in the adaptive domains of…

Background: The purpose of this study was to explore the role of everyday executive functions in relation to intelligence and adaptive behaviour in children and adolescents with mild intellectual disability. Method: A group of children and adolescents, previously diagnosed with mild intellectual disability were assessed according to intelligence,…

Adolescents with autism spectrum disorder (ASD) without an intellectual disability have daily living skills (DLS) impairments. An initial feasibility pilot of Surviving and Thriving in the Real World (STRW), a group intervention that targets DLS, demonstrated significant improvements. A pilot RCT of STRW was conducted to extend these findings.…

Measurement of adaptive skills is important in the diagnosis, intervention planning, and progress monitoring of children with intellectual and developmental disabilities (IDD). Thus, ensuring accurate measurement, including measurement invariance, across children with and without IDD is critical. In this study, we evaluate the measurement…

Adolescents with autism spectrum disorder (ASD) without an intellectual disability (ID) have daily living skills (DLS) that fall below their chronological age and affect their ability to achieve successful adult outcomes, but little is known about their specific DLS challenges. Utilizing the Vineland Adaptive Behavior Scales, 3rd Edition (VABS-3)…

Youth with autism spectrum disorder (ASD) face challenges accessing needed services as they transition to adulthood. Correlates of service access identified in the literature--such as family resources, race/ethnicity, or youth functioning--can be difficult to change and may not be feasible targets for intervention. This study focused on a…

Introduction: Mental health assessment in autistic individuals with intellectual disabilities may be challenging. Findings from non-autistic samples indicate overlap between obsessive-compulsive disorder (OCD) and psychotic disorder/schizophrenia, but little is known about this potential overlap in autistic people. Methods: Explorative,…

The Vineland-3 purports to measure three dimensions of adaptive behavior, but empirical evidence pertaining to its structural validity is lacking. In this study, factor analyses were conducted on the standardization sample data for the comprehensive forms within the 11- to 20-year-old age range. Results did not support the three domain structure…

Background & aims: Although the Picture Exchange Communication System (PECS) has been demonstrated to be an effective intervention to teach people diagnosed with autism spectrum disorder a functional communication system, the research indicates variability in PECS outcomes across people and studies. Therefore, the purpose of the current study…

There is limited literature examining the adaptive functioning of adolescents with autism spectrum disorder (ASD). This study aimed to (a) document Vineland Adaptive Behavior Scales (VABS-3) and Adaptive Behavior Assessment System (ABAS-3) adaptive behavior profiles of adolescents with ASD; (b) examine the comparability of the two measures; and…

Executive function challenges are commonly reported in the home setting for children with an autism spectrum disorder diagnosis (hereafter, autism), but little is known about these challenges in the school setting. A total of 337 youth (autism, N = 241 and typically developing, N = 96) were assessed using Behavior Rating Inventory of Executive…

This prospective study examined the developmental changes over time of adolescents diagnosed in toddlerhood with autism spectrum disorder and searched for child characteristics at toddlerhood that predict outcome at adolescence. The study included 65 participants who were divided into low cognitive (developmental quotient [less than] 85; N = 41)…

The purpose of this systematic review is to describe current evidence regarding interventions that improve the participation and performance of chores in children and youth with disabilities from the ages of 3 to 21. A systematic review of articles published between 2000 and 2019 was conducted using the PRISMA-P systematic review methodology. An a…