Investigation of Broad Autism Phenotype Traits as Measured by the 26-Item Autism Quotient

Amy Suzanne Camodeca, Alexandra Hosack, Kylie Q. Todd

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The extant literature regarding psychometric properties of measures of subclinical adult autism traits is sparse. The current study investigated the validity and internal consistency reliability of the 26-item Autism Quotient (AQ-26), a self-report measure of autism traits, in a nonclinical young adult sample. Results indicated significantly better model fit with an 18-item measure (AQ-18), with optimal fit indices. Otherwise, AQ-18 and AQ-26 findings were similar and are discussed together. A three-factor model best fit the data. Scores demonstrated similar correlations in expected directions with the Empathy Quotient and Broad Autism Phenotype (BAP) Questionnaire. Expected differences were also observed when college major, gender, and BAP/non-BAP groups were compared. Despite somewhat weaker evidence for the 26/18-Details/Patterns factor, findings indicate that the AQ-26 and AQ-18 are promising measures of the three traits of subclinical autism spectrum symptomatology.

Original languageEnglish (US)
Pages (from-to)338-357
Number of pages20
JournalJournal of Psychoeducational Assessment
Volume37
Issue number3
DOIs
StatePublished - Jun 1 2019

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Autistic Disorder
autism
Phenotype
empathy
Psychometrics
psychometrics
Self Report
young adult
Young Adult
questionnaire
gender
evidence
Group

All Science Journal Classification (ASJC) codes

  • Education
  • Clinical Psychology
  • Psychology(all)

Cite this

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abstract = "The extant literature regarding psychometric properties of measures of subclinical adult autism traits is sparse. The current study investigated the validity and internal consistency reliability of the 26-item Autism Quotient (AQ-26), a self-report measure of autism traits, in a nonclinical young adult sample. Results indicated significantly better model fit with an 18-item measure (AQ-18), with optimal fit indices. Otherwise, AQ-18 and AQ-26 findings were similar and are discussed together. A three-factor model best fit the data. Scores demonstrated similar correlations in expected directions with the Empathy Quotient and Broad Autism Phenotype (BAP) Questionnaire. Expected differences were also observed when college major, gender, and BAP/non-BAP groups were compared. Despite somewhat weaker evidence for the 26/18-Details/Patterns factor, findings indicate that the AQ-26 and AQ-18 are promising measures of the three traits of subclinical autism spectrum symptomatology.",
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Investigation of Broad Autism Phenotype Traits as Measured by the 26-Item Autism Quotient. / Camodeca, Amy Suzanne; Hosack, Alexandra; Todd, Kylie Q.

In: Journal of Psychoeducational Assessment, Vol. 37, No. 3, 01.06.2019, p. 338-357.

Research output: Contribution to journalArticle

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