Stability of Vocal Variables Measured During the Early Communication Indicator for Children With Autism Spectrum Disorder

Jena McDaniel, Paul Yoder, Annette Estes, Sally J. Rogers

Research output: Contribution to journalArticlepeer-review

Abstract

The Early Communication Indicator (ECI) was designed to measure expressive communication progress in young children. We evaluated using the 6-min ECI procedure for a new purpose-a sampling context for stable measures of vocal development of young children with autism spectrum disorder (ASD). We evaluated how many ECI sessions were required to adequately stabilize estimates of volubility, communicative use, and phonological complexity of vocalizations at two periods (average of 10 months apart). Participants included 83 young children with ASD (M age = 23.33 months). At study initiation, two phonological complexity variables required two sessions; other variables required three. At study endpoint, all variables required fewer sessions. Findings support the feasibility and stability of using the ECI for the new purpose.

Original languageEnglish (US)
Pages (from-to)142-157
Number of pages16
JournalAmerican journal on intellectual and developmental disabilities
Volume126
Issue number2
DOIs
StatePublished - Mar 1 2021

Keywords

  • autism spectrum disorder
  • children
  • generalizability theory
  • vocal development

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Neuropsychology and Physiological Psychology
  • Developmental and Educational Psychology
  • Arts and Humanities (miscellaneous)
  • Clinical Neurology
  • Psychiatry and Mental health

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