2021
DOI: 10.1017/exp.2020.70
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Internal reliability, homogeneity, and factor structure of the ten-item Autism-Spectrum Quotient (AQ-10) with two additional response categories

Abstract: The ten-item short form of the Autism-Spectrum Quotient (AQ-10) has been used to efficiently assess autistic traits in the general population; however, the psychometric properties of the AQ-10 in terms of its internal reliability and its unifactorial structure have recently been questioned. In the present study (N = 797), whether the internal reliability is increased when the AQ-10 is applied with six rather than the conventional four response categories has been investigated. Moreover, correlational and confi… Show more

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Cited by 14 publications
(14 citation statements)
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“…A potential limitation of this study is that we sorted groups based on having a validated diagnosis of autism only. The AQ-10, while helpful as a screening tool and a means of characterising participants, does not have diagnostic validity ( Ashwood et al, 2016 ) and studies have raised questions about the reliability of this measure in capturing characteristics of autism that do not reach clinical significance ( Bertrams & Shah, 2021 ). To exclude or include participants on the basis of AQ-10 scores would have significant limitations as a method.…”
Section: Discussionmentioning
confidence: 99%
“…A potential limitation of this study is that we sorted groups based on having a validated diagnosis of autism only. The AQ-10, while helpful as a screening tool and a means of characterising participants, does not have diagnostic validity ( Ashwood et al, 2016 ) and studies have raised questions about the reliability of this measure in capturing characteristics of autism that do not reach clinical significance ( Bertrams & Shah, 2021 ). To exclude or include participants on the basis of AQ-10 scores would have significant limitations as a method.…”
Section: Discussionmentioning
confidence: 99%
“…We found the expected negative relationship between mentalizing ability and RAADS-14 scores (linear regression model:  −14 = -0.002, SE = 0.0009, t476 = -2.21, P = 0.03) but not AQ-10 scores (linear regression model:  10 = 0.006, SE = 0.004, t476 = 1.33, P = 0.19). This unexpected finding, together with recent re-evaluations of the reliability of the AQ-10 scale (Bertrams, 2021), and the greater developmental information captured by the RAADS-14, led us to focus on RAADS-14 scores in the remainder of the analyses.…”
Section: Confidence Was Negatively Related To Response Times (Logrt) Trial-by-trial Response Times Have a Higher Impact On The Estimated mentioning
confidence: 96%
“…To test the effect of autistic traits on ( ) we ran the same models specified in Equations 1.1 and 1.2 but now replacing menta with the RAADS-14 main composite autistic trait scores (Eriksson et al, 2013). In preliminary analyses we failed to replicate previous findings of a negative correlation between mentalizing ability and AQ-10 scores (Allison et al, 2012), and therefore (deviating from our pre-registration plan) we decided to conduct all further analysis of questionnaire data using RAADS-14 scores alone (Bertrams, 2021).…”
Section: Statisticsmentioning
confidence: 99%
“…Thus, even within the autistic population, the severity of autistic symptoms may be relevant for the degree of test anxiety. However, we do not want to overstate these relationships, as very recent research has revealed some psychometric deficits of the 10-item AQ that we used in this study [27,28].…”
Section: Discussionmentioning
confidence: 99%