Pre-linguistic vocal trajectories at 6-18 months of age as early markers of autism

Natasha Chericoni, Daniele De Brito Wanderley, Valeria Costanzo, Andréa Diniz-Gonçalves, Marluce Leitgel Gille, Erika Parlato, David J. Cohen, Fabio Apicella, Sara Calderoni, Filippo Muratori

Research output: Contribution to journalArticle

Abstract

This study explores pre-linguistic vocal trajectories in infants with autism spectrum disorder (ASD) during caregiver-infant interaction. Home videos were obtained from 10 infants with ASD and 10 typically developing infants (TD), covering three time periods: 0-6 months (T1, 47 video sequences), 6-12 months (T2, 47 video sequences), and 12-18 months (T3, 48 video sequences). In total 142 video sequences were analyzed. Vocalizations, long reduplicated babbling, 2-syllable babbling, and first words were investigated longitudinally. Face-gazing was also analyzed, to evaluate the social quality of vocal behaviors. Results show a lower rate of vocalizations in the ASD group at T2, and a lower rate of first words at T3, compared to the TD group. However, the prevalence of non-social babbling, appeared higher in the ASD group. The implications of these findings for screening programs are discussed.

Original languageEnglish
Article number1595
JournalFrontiers in Psychology
Volume7
Issue numberOCT
DOIs
Publication statusPublished - Oct 19 2016

Keywords

  • Autism spectrum disorder
  • Babbling
  • Early language development
  • Vocalizations

ASJC Scopus subject areas

  • Psychology(all)

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