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Updated: Jun 25, 2025

Using the Visual World Paradigm to Study Sentence Comprehension in Mandarin-Speaking Children with Autism
Published on: October 3, 2018
Social and Linguistic Correlates of Vocabulary Size in Autism: Overlapping Vocalization and Phonological Memory
Eun Ae Choi1,2, Sara T Kover3
1Department of Speech and Hearing Sciences, University of Washington, Seattle, USA. eunae.choi@sjsu.edu.
Abstract:
This study sought to understand the wide variability in vocabulary development among autistic children by testing potential social and linguistic correlates of vocabulary size. The correlation between overlapping vocalization (i.e., an aspect of social interaction relevant to accessing input for vocabulary acquisition) and phonological memory (i.e., retaining linguistic sound sequences) with vocabulary size were examined in 22 autistic children (3 to 11 years old) engaged in a structured nonword repetition task. Overlapping vocalization and phonological memory were correlated with vocabulary size. Overlapping vocalization remained a significant predictor of receptive and expressive vocabulary size when controlling phonological memory and nonverbal cognition. Both social and linguistic factors were associated with receptive and expressive vocabulary size in autistic children engaged in a structured task.
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