Development of an Objective Autism Risk Index Using Remote Eye Tracking

Thomas W. Frazier, Eric W. Klingemier, Mary Beukemann, Leslie Speer, Leslie Markowitz, Sumit Parikh, Steven Wexberg, Kimberly Giuliano, Elaine Schulte, Carol Delahunty, Veena Ahuja, Charis Eng, Michael J. Manos, Antonio Y. Hardan, Eric A. Youngstrom, Mark S. Strauss

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

Objective Abnormal eye gaze is a hallmark characteristic of autism spectrum disorder (ASD), and numerous studies have identified abnormal attention patterns in ASD. The primary aim of the present study was to create an objective, eye tracking-based autism risk index. Method In initial and replication studies, children were recruited after referral for comprehensive multidisciplinary evaluation of ASD and subsequently grouped by clinical consensus diagnosis (ASD n = 25/15, non-ASD n = 20/19 for initial/replication samples). Remote eye tracking was blinded to diagnosis and included multiple stimuli. Dwell times were recorded to each a priori-defined region of interest (ROI) and averaged across ROIs to create an autism risk index. Receiver operating characteristic curve analyses examined classification accuracy. Correlations with clinical measures evaluated whether the autism risk index was associated with autism symptom severity independent of language ability. Results In both samples, the autism risk index had high diagnostic accuracy (area under the curve [AUC] = 0.91 and 0.85, 95% CIs = 0.81-0.98 and 0.71-0.96), was strongly associated with Autism Diagnostic Observation Schedule-Second Edition (ADOS-2) severity scores (r = 0.58 and 0.59, p <.001), and not significantly correlated with language ability (r ≤| -0.28|, p >.095). Conclusion The autism risk index may be a useful quantitative and objective measure of risk for autism in at-risk settings. Future research in larger samples is needed to cross-validate these findings. If validated and scaled for clinical use, this measure could inform clinical judgment regarding ASD diagnosis and track symptom improvements.

Original languageEnglish (US)
Pages (from-to)301-309
Number of pages9
JournalJournal of the American Academy of Child and Adolescent Psychiatry
Volume55
Issue number4
DOIs
StatePublished - Apr 1 2016

Keywords

  • autism spectrum disorder
  • autism symptoms
  • objective measure
  • remote eye tracking
  • risk

ASJC Scopus subject areas

  • Developmental and Educational Psychology
  • Psychiatry and Mental health

Fingerprint Dive into the research topics of 'Development of an Objective Autism Risk Index Using Remote Eye Tracking'. Together they form a unique fingerprint.

Cite this