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Is it Possible to Assess the Two-Domain Definition of the Broad Autism Phenotype Using the Available Measurement
M Godoy-Giménez1, A González-Rodríguez1, F Cañadas1,2
1Department of Psychology, University of Almeria, 04120, Almería, Spain.
Journal of Autism and Developmental Disorders
|June 29, 2021
Summary
The Broad Autism Phenotype (BAP) measures need updating to align with current autism spectrum disorder (ASD) diagnostic criteria. Analysis revealed that the Social Responsiveness Scale (SRS) items best represent the two-domain ASD operationalization.
Area of Science:
- Psychiatry and Psychology
- Neurodevelopmental Disorders
Background:
- Autism spectrum disorder (ASD) operationalization has evolved to a two-domain model.
- The Broad Autism Phenotype (BAP) construct has not been updated to reflect this change.
- Existing BAP measures (BAPQ, AQ, SRS) lack consistent factor structures.
Purpose of the Study:
- To evaluate if current BAP measure items align with the updated two-domain ASD operationalization.
- To assess the construct representativeness and relevance of BAP items.
Main Methods:
- Parallel analysis was conducted on items from the BAPQ, Autism Quotient, and SRS.
- Expert judgment was used to assess item wording, relevance, and construct representativeness.
- A final pool of 48 BAP-relevant items was curated.
Main Results:
- Parallel analysis suggested two main components aligning with the two-domain ASD model.
- Expert review indicated potential under-representation of two subdomains within the item pool.
- Social Responsiveness Scale (SRS) items demonstrated coverage across all subdomains, unlike BAPQ and AQ.
Conclusions:
- Current BAP measures require revision to align with the contemporary two-domain ASD framework.
- The SRS shows greater potential for representing the updated BAP construct.
- Further refinement of BAP measures is needed to ensure comprehensive subdomain coverage.
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