ArticleJournal of speech, language, and hearing research : JSLHR2026
Is There a Relationship Between Infant and Toddler Speech Discrimination Abilities and Mean Length of Utterance at 33 Months?
Article in Journal of speech, language, and hearing research : JSLHR, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeThe purpose of this study was to examine the relationship among speech discrimination at 9 months of age, word recognition at 30 months of age, and mean length of utterance in morphemes (MLUm) at 33 months of age among children who are hard of hearing (CHH) and children with normal hearing (CNH). This study also explored early sociodemographic and audiological variables that may influence communication outcomes in CHH and CNH.
methodParticipants included 18 CNH and 32 CHH with early and well-fit hearing aids (HAs). Measures included speech discrimination in response to vowel and consonant stimuli at 9 months, word recognition at 30 months, and a spontaneous language sample at 33 months.
resultsGroup-level differences were not observed in speech discrimination or word recognition but emerged for language outcomes. Specifically for language outcomes, CHH had shorter MLUms and produced fewer mental state verbs than CNH. Vowel discrimination and word recognition were related to each other, and word recognition was related to MLUm. Consonant discrimination did not relate to any other variables. Higher MLUm was related to maternal level of education, hearing status, and daily device use. Additionally, daily device use at both 9 and 30 months correlated with word recognition at 30 months.
conclusionsEarly auditory measures (speech discrimination and daily device use) relate to later speech recognition and MLUm in young children wearing well-fit HAs. Clinicians should consider these early metrics, as well as spontaneous language samples to capture real-world conversational skills, to identify young CHH at risk for poorer language outcomes. SUPPLEMENTAL MATERIAL: https://doi.org/10.23641/asha.31212223.
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