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Martini, Miriam I.; Merkelbach, Inge; Begeer, Sander – Journal of Autism and Developmental Disorders, 2023
Pre- and post-term children show increased autism risk. Little is known about gestational age (GA) prevalence among autistic children, and their respective autism phenotype. We compared prevalence of pre-, full- and post-term birth between a population-derived sample of N = 606 (137 females, 22.61%) autistic children and adolescents (mean age =…
Descriptors: Premature Infants, At Risk Persons, Autism Spectrum Disorders, Incidence
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Scheeren, Anke M.; Buil, J. Marieke; Howlin, Patricia; Bartels, Meike; Begeer, Sander – Autism: The International Journal of Research and Practice, 2022
Research has shown lower rates of employment and independent living in adults with autism. Many of these findings are based on cross-sectional studies, predominantly involving male participants. In a 6-year longitudinal study, we examined determinants of psychosocial outcomes in 917 adults with autism spectrum disorder (425 men, 492 women, mean…
Descriptors: Autism, Pervasive Developmental Disorders, Adults, Employment
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Geurts, Hilde M.; McQuaid, Goldie A.; Begeer, Sander; Wallace, Gregory L. – Autism: The International Journal of Research and Practice, 2022
Prior research suggests that autistic adults are at increased risk for developing the core motor components of Parkinson's disease (i.e. parkinsonism) although knowledge is limited to date. Therefore, we explore: (1) the prevalence of both continuous self-reported motor features typical of parkinsonism and the screen positivity rate for…
Descriptors: Older Adults, Autism, Pervasive Developmental Disorders, At Risk Persons
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Jonkman, Kim M.; Back, Elisa; Begeer, Sander – Autism: The International Journal of Research and Practice, 2023
Autism is a heterogeneous diagnosis with symptoms that present in different ways. There is a large variety of interventions for autistic individuals. However, little is known about who chooses which specific interventions. We aimed to explore intervention prevalence and predict intervention use, based on demographic and autism-specific…
Descriptors: Autism Spectrum Disorders, Intervention, Children, Adolescents
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Kuzminskaite, Erika; Begeer, Sander; Hoekstra, Rosa A.; Grove, Rachel – Autism: The International Journal of Research and Practice, 2020
Autism spectrum disorder and anxiety are highly comorbid conditions. Understanding the underlying traits of anxiety in autism spectrum disorder is crucial to prevent and treat it efficiently. Hence, this study determined whether social communication difficulties or restricted repetitive behaviors are stronger risk factors for anxiety symptoms in…
Descriptors: Foreign Countries, Autism, Pervasive Developmental Disorders, Predictor Variables
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Deserno, Marie K.; Borsboom, Denny; Begeer, Sander; Geurts, Hilde M. – Autism: The International Journal of Research and Practice, 2017
Given the heterogeneity of autism spectrum disorder, an important limitation of much autism spectrum disorder research is that outcome measures are statistically modeled as separate dependent variables. Often, their multivariate structure is either ignored or treated as a nuisance. This study aims to lift this limitation by applying network…
Descriptors: Autism, Pervasive Developmental Disorders, Well Being, Network Analysis