Related Experiment Video
Updated: Dec 25, 2025

Author Spotlight: Exploring Autism Spectrum Disorder Symptoms in Fruit Flies — Genetic Models and Behavioral Tests
Published on: September 6, 2024
California Autism Prevalence by County and Race/Ethnicity: Declining Trends Among Wealthy Whites
Cynthia Nevison1, William Parker2
1Institute for Alpine and Arctic Research, University of Colorado, Campus Box 450, Boulder, 80309-0450, USA. Cynthia.Nevison@colorado.edu.
Abstract:
County-level ASD prevalence was estimated using an age-resolved snapshot from the California Department of Developmental Services (DDS) for birth years 1993-2013. ASD prevalence increased among all children across birth years 1993-2000 but plateaued or declined thereafter among whites from wealthy counties. In contrast, ASD rates increased continuously across 1993-2013 among whites from lower income counties and Hispanics from all counties. Both white ASD prevalence and rate of change in prevalence were inversely correlated to county income from birth year 2000-2013 but not 1993-2000. These disparate trends within the dataset suggest that wealthy white parents, starting around 2000, may have begun opting out of DDS in favor of private care and/or making changes that effectively lowered their children's risk of ASD.
Related Concept Videos
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.
Prevalence and Incidence
Prevalence indicates the proportion of individuals in a population who have a specific disease or health...
Modeling in Therapy
Participant Modeling
Participant modeling involves therapists demonstrating calm and effective behaviors in...
Surveys
Conservation of Declining Populations
Learning Disabilities
Dyslexia
Dyslexia is a...

