Self-determination enhances a person's quality of life and is a fundamental human right. According to self-determination theory, autonomy is one of three basic psychological needs that must be met to experience self-determination. The overarching aim of this exploratory study was to learn about autonomy from the perspective of autistic adults with…

Substantial efforts have been dedicated to understanding, assessing, and managing suicide risk in youth broadly. However, little attention has been focused specifically on autistic youth and youth with intellectual disability. Because emergency departments are an essential point of suicide-related care, we used the National Emergency Department…

Research shows significant rates of depressive symptoms in people with autistic spectrum disorder and intellectual disabilities. Finding factors related to the development of depression in autism spectrum disorder and intellectual disability is necessary. Emotion regulation is associated with depression in autism spectrum disorder and intellectual…

Autistic individuals with intellectual disability are at greater risk of experiencing anxiety than their non-autistic peers without intellectual disability. Anxiety in this group may present as behaviour that challenges, often leading families to reach out to healthcare or support services. However, many families experience difficulties accessing…

Genetic tests, such as Fragile X and Chromosomal Microarray, are recommended as a standard of care during the evaluation of autism spectrum disorder (ASD) and other neurodevelopmental disorders. However, previous research demonstrates low rates of genetic testing. This study aimed to identify the rates of genetic testing and patient demographic…

Autism spectrum disorder is a neurodevelopmental condition characterized by deficits in social communication and repetitive behaviors. How specific anatomical alterations contribute to the clinical profile of autism spectrum disorder remains largely uncharacterized. We have previously shown that parvalbumin-positive Chandelier cells, a specific…

Understanding the types of intervention practices familiar to transdisciplinary autism spectrum disorder providers may be critical to characterize and optimize "usual care" for common clinical concerns (e.g. internalizing, externalizing, and social challenges) among school- and transition-age autistic youth. We assessed if there is an…

Multi-sensory environments are widely used with autistic children. However, there are no data on how autistic children choose to spend time in the room and how this relates to their sensory, behavioural and intellectual profiles. We observed the frequency and duration of visits to multi-sensory environment equipment of 41 autistic children during…

Autistic people appear to be at increased risk of post-traumatic stress disorder, and experiences involving violence or sexual abuse appear to be common in this population. However, knowledge concerning trauma in autistic people with co-occurring intellectual disabilities is limited. In this cross-sectional study, we explored the prevalence of…

Medicaid is a major insurer of autistic people. However, during the transition to adulthood, autistic individuals are more likely than people with intellectual disability to lose their Medicaid benefits. Individuals with intellectual disability may have greater success maintaining Medicaid coverage during this time because most states provide…

A diagnosis of autism typically depends on clinical assessments by highly trained professionals. This high resource demand poses a challenge in low-resource settings. Digital assessment of neurodevelopmental symptoms by non-specialists provides a potential avenue to address this challenge. This cross-sectional case-control field study establishes…

Multimorbidity, defined as having two or more chronic health conditions, is associated with elevated polypharmacy and mortality. Autism spectrum disorder is a whole-body chronic health condition in which comorbidities -- in particular co-occurring intellectual disability -- contribute to high clinical heterogeneity, polypharmacy and premature…

The prevalence of autism spectrum disorder in the world has increased over the last decade, but the prevalence, incidence, and characteristics of autism spectrum disorder in China were not well understood. Using administrative data, we aimed to estimate the prevalence and incidence of autism spectrum disorder and describe the co-occurring…

The etiological significance of neurological disorders in autism is debated, but it is clear that they complicate support provision and clinical management, and can have negative impact on outcomes. This systematic review and meta-analysis explored the full range of co-occurring neurological disorders in autism. We estimated the odds of having…

Autism spectrum disorder and intellectual disability are associated with psychiatric comorbidities, yet a 2009 study of US child and adolescent psychiatry program directors indicated that psychiatry residents receive insufficient training in autism spectrum disorder/intellectual disability. This follow-up study surveyed child and adolescent…