Related Experiment Video
Updated: Mar 12, 2026

Using the Visual World Paradigm to Study Sentence Comprehension in Mandarin-Speaking Children with Autism
Published on: October 3, 2018
Prevalence of Autism Spectrum Disorders Among Children With Intellectual Disability
Bridgette L Tonnsen1, Andrea D Boan, Catherine C Bradley
1Bridgette L. Tonnsen, Department of Psychological Sciences, Purdue University; Andrea Boan, Catherine Bradley, and Jane Charles, Department of Developmental and Behavioral Pediatrics, Medical University of South Carolina; Amy Cohen, Department of Psychology, University of Illinois at Urbana-Champaign; and Laura A. Carpenter, Department of Developmental and Behavioral Pediatrics, Medical University of South Carolina.
Abstract:
Autism spectrum disorders (ASD) often co-occur with intellectual disability (ID) and are associated with poorer psychosocial and family-related outcomes than ID alone. The present study examined the prevalence, stability, and characteristics of ASD estimates in 2,208 children with ASD and ID identified through the South Carolina Autism and Developmental Disabilities Network. The prevalence of ASD in ID was 18.04%, relative to ASD rates of 0.60%-1.11% reported in the general South Carolina population. Compared to children with ASD alone, those with comorbid ID exhibited increased symptom severity and distinct DSM-IV-TR profiles. Further work is needed to determine whether current screening, diagnostic, and treatment practices adequately address the unique needs of children and families affected by comorbid ASD and ID diagnoses.
More Related Videos
10:11Portable Intermodal Preferential Looking IPL: Investigating Language Comprehension in Typically Developing Toddlers and Young Children with Autism
Published on: December 14, 2012
09:13Testing Sensory and Multisensory Function in Children with Autism Spectrum Disorder
Published on: April 22, 2015
Related Concept Videos
Intellectual Disability
Autism Spectrum Disorder
These core symptoms manifest differently among individuals, ranging from mild to severe. The disorder's complexity extends beyond its clinical presentation, encompassing a diverse range of biological, cognitive, and sociocultural influences.
Learning Disabilities
Dyslexia
Dyslexia is a...
Environmental Influences on Intelligence
Attention-Deficit/Hyperactivity Disorder
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings....
Modeling in Therapy
Participant Modeling
Participant modeling involves therapists demonstrating calm and effective behaviors in...