Toddlers' Verb Lexicon Diversity and Grammatical Outcomes

Language, Speech, and Hearing Services in Schools
Pamela A HadleyNing Hsu

Abstract

The goals of this study were to quantify longitudinal expectations for verb lexicon growth and to determine whether verb lexicon measures were better predictors of later grammatical outcomes than noun lexicon measures. Longitudinal parent-report measures from the MacArthur-Bates Communicative Development Inventory (Fenson et al., 2007) from ages 21 to 30 months from an archival database were used to model growth in common noun and verb lexicon size for 45 typically developing toddlers. Communicative Development Inventory growth coefficients and 24-month measures of lexical diversity from spontaneous language samples were used to predict 30-month grammatical outcomes on the Index of Productive Syntax (Scarborough, 1990). Average verb growth was characterized by 50.57 verbs at 24 months, with linear growth of 8.29 verbs per month and deceleration overall. Children with small verb lexicons or slow linear growth at 24 months accelerated during this developmental period. Verb lexicon measures were better predictors of grammatical outcomes than noun lexicon measures, accounting for 47.8% of the variance in Index of Productive Syntax scores. Lexical verb diversity in spontaneous speech emerged as the single best predictor. Measures of...Continue Reading

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Citations

Jul 7, 2018·Language, Speech, and Hearing Services in Schools·Evelyn P AltenbergHollis S Scarborough
Sep 12, 2017·Journal of Speech, Language, and Hearing Research : JSLHR·Pamela A HadleyJanet K Holt
Mar 3, 2018·American Journal of Speech-language Pathology·Pamela A HadleyMatthew Rispoli
Dec 8, 2015·Journal of Child Language·Ning HsuMatthew Rispoli
May 22, 2019·Journal of Speech, Language, and Hearing Research : JSLHR·Madison C CrandallPaul J Yoder
May 22, 2019·American Journal of Speech-language Pathology·Allison BeanSamantha Lyle
Mar 19, 2020·Language, Speech, and Hearing Services in Schools·Jenny A RobertsMadison Hunter
Apr 8, 2020·Language, Speech, and Hearing Services in Schools·Cathy BingerQuinn C Hollerbach
May 11, 2019·Journal of Autism and Developmental Disorders·Madison Cloud CrandallPaul J Yoder
Nov 13, 2018·Journal of Speech, Language, and Hearing Research : JSLHR·Sudha Arunachalam, Rhiannon J Luyster
Aug 19, 2018·Language, Speech, and Hearing Services in Schools·Sabrina HorvathSudha Arunachalam
Dec 6, 2018·Journal of Speech, Language, and Hearing Research : JSLHR·Matthew James ValleauSudha Arunachalam
Jan 1, 2020·Journal of Cognition and Development : Official Journal of the Cognitive Development Society·Ashley KoenigKimberly J Saudino
Oct 17, 2020·Journal of Speech, Language, and Hearing Research : JSLHR·Pamela A Hadley
May 14, 2021·Journal of Speech, Language, and Hearing Research : JSLHR·Kaya J LeGrandRhiannon J Luyster
Sep 30, 2021·Journal of Speech, Language, and Hearing Research : JSLHR·Sabrina Horvath, Sudha Arunachalam
Oct 8, 2021·Language, Speech, and Hearing Services in Schools·Lauren E Kelley, James P McCann
Nov 9, 2021·American Journal of Speech-language Pathology·Ji Seung YangNan Bernstein Ratner

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