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Understanding Echoics: Identifying Predictive Indicators of Vocal Imitation.

Lee Mason1,2,3, Alexis Bolds2, Maeve Gavagan2

  • 1Child Study Center, Cook Children's Health Care System, 1300 W Lancaster Ave, Fort Worth, TX 76110 USA.

The Analysis of Verbal Behavior
|July 25, 2025
PubMed
Summary

Identifying prerequisite skills for echoic behavior in children with autism spectrum disorder is crucial. Mand repertoire, vocal play, and motor imitation significantly predict the development of echoic skills, aiding early intervention planning.

Keywords:
Autism spectrum disorderBinomial logistic regressionLanguage predictorsVerbal behavior

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Area of Science:

  • Behavioral Psychology
  • Developmental Psychology
  • Speech and Language Pathology

Background:

  • Echoic prompts are valuable for developing functional language skills in individuals with autism spectrum disorder (ASD).
  • However, a significant number of individuals with ASD do not exhibit echoic behavior, posing challenges for language development interventions.
  • Understanding the foundational skills that precede echoic behavior is essential for effective intervention planning and clinical decision-making in ASD.

Purpose of the Study:

  • To identify prerequisite skills that predict the development of an echoic repertoire in children with autism spectrum disorder.
  • To inform early intervention strategies by pinpointing key behaviors that facilitate the acquisition of echoic verbal behavior.

Main Methods:

  • A retrospective chart review was conducted on 118 children with autism who received early intensive behavioral intervention.
  • Data from the Verbal Behavior Milestones Assessment and Placement Program (VBMAPP) echoic skills subtest were analyzed.
  • Binomial logistic regression was employed to determine the predictive relationship between prerequisite skills (mand repertoire, vocal play, motor imitation) and echoic behavior, controlling for age and sex.

Main Results:

  • The logistic regression model was statistically significant (X²(10)=109.61, p<.001), explaining 86.0% of the variance in echoic verbal behavior and achieving 95.8% classification accuracy.
  • Children with a developed mand repertoire were over 3.5 times more likely to exhibit echoic behavior.
  • Vocal play and motor imitation were also significantly associated with an increased likelihood of developing echoic skills.

Conclusions:

  • Mand repertoire, vocal play, and motor imitation are identified as three key predictors influencing the development of echoic behavior in children with autism.
  • These findings suggest that targeting these prerequisite skills in early intervention programs may enhance the acquisition of echoic verbal behavior.
  • Further research is warranted to confirm a functional relationship between these predictors and echoic control.