ERIC Number: EJ1136514
Record Type: Journal
Publication Date: 2015-May
Abstractor: As Provided
Focal Points, Endogenous Processes, and Exogenous Shocks in the Autism Epidemic
Liu, Kayuet; Bearman, Peter S.
Sociological Methods & Research, v44 n2 p272-305 May 2015
Autism prevalence has increased rapidly in the United States during the past two decades. We have previously shown that the diffusion of information about autism through spatially proximate social relations has contributed significantly to the epidemic. This study expands on this finding by identifying the focal points for interaction that drive the proximity effect on subsequent diagnoses. We then consider how diffusion dynamics through interaction at critical focal points, in tandem with exogenous shocks, could have shaped the spatial dynamics of autism in California. We achieve these goals through an empirically calibrated simulation model of the whole population of 3- to 9-year-olds in California. We show that in the absence of interaction at these foci--principally malls and schools--we would not observe an autism epidemic. We also explore the idea that epigenetic changes affecting one generation in the distal past could shape the precise spatial patterns we observe among the next generation.
Descriptors: Autism, Pervasive Developmental Disorders, Incidence, Interaction, Proximity, Clinical Diagnosis, Communication (Thought Transfer), Children, Simulation, Models, Interpersonal Relationship
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Sponsor: National Institutes of Health (DHHS)
Authoring Institution: N/A
Identifiers - Location: California
Grant or Contract Numbers: 1DP1OD00363501