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Validation and determining an optimal cut-off score of the Infant Behavior Checklist for autism spectrum disorder

Toshinobu Takeda1, Hirokazu Osada2, Yui Tsuji3

  • 1Faculty of Psychology Ryukoku University Kyoto Japan.

PCN Reports : Psychiatry and Clinical Neurosciences
|June 21, 2024
PubMed

Insights

This study validates the Infant Behavior Checklist (IBC) for screening autism spectrum disorder (ASD) in Japan. The IBC shows good validity and reliability, offering a valuable tool for early identification of ASD.

Area of Science:

  • Child Psychiatry
  • Developmental Psychology
  • Clinical Psychology

Background:

  • Rising prevalence of autism spectrum disorder (ASD) necessitates reliable screening tools.
  • Japan faces a shortage of child psychiatrists, increasing the need for efficient diagnostic aids.
  • The COVID-19 pandemic highlighted the importance of adaptable screening methods.

Purpose of the Study:

  • To validate the Infant Behavior Checklist (IBC) developed by Japanese experts for ASD screening.
  • To determine an appropriate cut-off score for the IBC in the Japanese context.
  • To assess the psychometric properties of the IBC for ASD identification.

Main Methods:

  • 354 clinic-referred children and their caregivers participated.
  • Statistical analysis of clinical records and IBC assessments.
  • Diagnostic interviews were used to confirm diagnoses.

Main Results:

  • The IBC demonstrated good internal consistency (Cronbach's alpha = 0.77).
  • IBC scores were significantly higher in children with ASD compared to non-ASD cases.
  • The optimal cut-off score yielded an AUC of 0.803, with high sensitivity (0.94) and specificity (0.79).

Conclusions:

  • The IBC is a valid screening instrument for ASD with satisfactory psychometric properties.
  • High sensitivity and specificity support the IBC's utility for early ASD detection.
  • Further research is recommended to confirm the clinical applicability of the IBC.
Abstract

Keywords:
Japanautism spectrum disorderquestionnairescreeningvalidation

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