Journal of Autism and Developmental Disorders

, Volume 49, Issue 11, pp 4686–4690 | Cite as

Screening of Broader Autism Phenotype Symptoms in Siblings: Support for a Distinct Model of Symptomatology

  • James A. RankinEmail author
  • Theodore S. Tomeny
Brief Report


Research on siblings of youth with autism spectrum disorder (ASD) suggests that some phenotypic presentation, known as the broader autism phenotype (BAP), is common among siblings without an ASD diagnosis (e.g., Ruzich et al. in Autism Res 9(6):658–665, 2016). Whereas the symptoms that underlie both ASD and the BAP share commonality, the structure of these symptoms in youth with ASD and their siblings may differ. The current study assessed whether differences arise in the factor structure of the Children’s Social Behavior Questionnaire (CSBQ) between youth with ASD and their siblings in a sample of 221 sibling dyads. Results suggest similar factor structures for ASD and BAP; however, number of symptoms endorsed, as opposed to the degree of severity, may better differentiate BAP.


Autism spectrum disorder Broader autism phenotype Siblings 



This research did not receive any specific Grant from funding agencies in the public, commercial, or not-for-profit sectors. The authors declare that there is no conflict of interest regarding the publication of this article.

Compliance with Ethical Standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical Approval

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

Informed consent was obtained from all individual participants included in the study.

Supplementary material

10803_2019_4157_MOESM1_ESM.docx (24 kb)
Supplementary material 1 (DOCX 24 kb)


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of PsychologyThe University of AlabamaTuscaloosaUSA

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