Factor structure, reliability and criterion validity of the Autism-Spectrum quotient (AQ): a study in Dutch population and patient groups

Hoekstra, Rosa A.; Bartels, Meike; Cath, Danielle C. and Boomsma, Dorret I. (2008). Factor structure, reliability and criterion validity of the Autism-Spectrum quotient (AQ): a study in Dutch population and patient groups. Journal of Autism and Developmental Disorders, 38(8) pp. 1555–1566.

DOI: https://doi.org/10.1007/s10803-008-0538-x

Abstract

The factor structure of the Dutch translation of the Autism-Spectrum Quotient (AQ; a continuous, quantitative measure of autistic traits) was evaluated with confirmatory factor analyses in a large general population and student sample. The criterion validity of the AQ was examined in three matched patient groups (autism spectrum conditions (ASC), social anxiety disorder, and obsessive–compulsive disorder). A two factor model, consisting of a 'Social interaction' factor and 'Attention to detail' factor could be identified. The internal consistency and test–retest reliability of the AQ were satisfactory. High total AQ and factor scores were specific to ASC patients. Men scored higher than women and science students higher than non-science students. The Dutch translation of the AQ is a reliable instrument to assess autism spectrum conditions.

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