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Related Experiment Video

Updated: Jul 7, 2025

Portable Intermodal Preferential Looking IPL: Investigating Language Comprehension in Typically Developing Toddlers and Young Children with Autism
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Early Communicative Development in Williams Syndrome: A Longitudinal Case Study.

Eliseo Diez-Itza1, Florencia Llona1, Verónica Martínez1

  • 1LOGIN Research Group, University of Oviedo, 33003 Oviedo, Spain.

Children (Basel, Switzerland)
|December 23, 2023
PubMed
Summary

This study tracked early language development in a baby with Williams Syndrome (WS), finding delayed precursors like pointing gestures and a developmental lag. Early intervention is crucial for supporting language acquisition in infants with WS.

Keywords:
Williams syndromeearly communicative developmentface preferencefirst wordsjoint attentionpointing

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Area of Science:

  • Neuropsychology
  • Developmental Pediatrics
  • Linguistics

Background:

  • Williams Syndrome (WS) presents a unique neuropsychological profile with delayed but relatively strong language skills.
  • Limited longitudinal data exists on early language precursors in infants with WS under 20 months.
  • Understanding these precursors is vital for early intervention strategies.

Purpose of the Study:

  • To evaluate early language precursors in an infant with Williams Syndrome between 8 and 18 months of age.
  • To document the developmental trajectory of joint attention, gestures, and early vocalizations.
  • To inform tailored early childhood intervention for WS.

Main Methods:

  • A longitudinal case study design involving systematic observation over seven sessions.
  • Utilized the Battelle Developmental Inventory for developmental assessments at 12 and 18 months.
  • Focused on observing precursors such as joint attention, object/social attention, and pointing gestures.

Main Results:

  • The infant exhibited atypical development, lagging 5-6 months behind chronological age expectations.
  • Object attention predominated over face preference, though face preference showed an increasing trend.
  • Pointing gestures did not emerge within the study period, appearing after initial word production.

Conclusions:

  • The findings highlight a distinct early linguistic profile in Williams Syndrome, characterized by delayed gestural development.
  • The results underscore the need for targeted interventions addressing specific developmental delays in infants with WS.
  • Early identification and support are critical for optimizing language outcomes in children with Williams Syndrome.