The Autism Impact Measure (AIM) was designed to track incremental change in frequency and impact of core ASD symptoms. The current study examined the structural and convergent validity of the AIM in a large sample of children with ASD. The results of a series of exploratory and confirmatory factor analyses yielded a final model with five theoretically and empirically meaningful subdomains: Repetitive Behavior, Atypical Behavior, Communication, Social Reciprocity, and Peer Interaction. The final model showed very good fit both overall and for each of the five factors, indicating excellent structural validity. AIM subdomain scores were significantly correlated with measures of similar constructs across all five domains. The results provide further support for the psychometric properties of the AIM.
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The authors are extremely grateful to all the families who participated in this study. We would also like to thank Nicole Takahashi, MS, and the entire study team for assistance with project coordination and implementation and Christopher Barr, PhD, for his assistance with data analysis. Research reported in this publication was supported by the National Institute of Mental Health of the National Institutes of Health under Award Number R01MH097726 awarded to Micah Mazurek. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health.
This study was funded by the National Institute of Mental Health of the National Institutes of Health under Award Number R01MH097726. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health.
Conflict of interest
Drs. Mazurek and Kanne will receive royalties from Western Psychological Services for the Autism Impact Measure. Drs. Carlson, Baker-Ericzén, Butter, and Norris declare that they have no conflicts of interest.
All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
Informed consent was obtained from all individual participants included in the study.
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Mazurek, M.O., Carlson, C., Baker-Ericzén, M. et al. Construct Validity of the Autism Impact Measure (AIM). J Autism Dev Disord 50, 2307–2319 (2020). https://doi.org/10.1007/s10803-018-3462-8
- Autism spectrum disorder
- Treatment outcome
- Autism symptoms