Modeling the Nature of Grammar and Vocabulary Trajectories From Prekindergarten to Third Grade

Autor: Laura Justice, Kate Cain, Hui Jiang, Jessica Logan, Rongfang Jia, Jessica A. Logan
Rok vydání: 2018
Předmět:
Zdroj: Journal of Speech, Language, and Hearing Research. 61:910-923
ISSN: 1558-9102
1092-4388
DOI: 10.1044/2018_jslhr-l-17-0090
Popis: PurposeThis study investigated the longitudinal development of 2 important contributors to reading comprehension, grammar, and vocabulary skills. The primary interest was to examine the trajectories of the 2 skill areas from preschool to 3rd grade.MethodThe study involved a longitudinal sample of 420 children from 4 sites. Language skills, including grammar and vocabulary, were assessed annually with multiple measures. Multivariate latent growth curve modeling was used to examine the developmental trajectories of grammar and vocabulary, to test the correlation between the 2 domains, and to investigate the effects of demographic predictors on language growth.ResultsResults showed that both grammar and vocabulary exhibited decelerating growth from preschool to Grade 2. In Grade 3, grammar growth further flattened, whereas vocabulary continued to grow stably. Growth of vocabulary and grammar were positively correlated. Demographic characteristics, such as child gender and family socioeconomic status, were found to predict the intercept but not the slope of the growth trajectories.ConclusionsChildren's growth in grammar skills is differentiated in a number of important ways from their growth in vocabulary skills. Results of this study suggest the need to differentiate these dimensions of language when seeking to closely examine growth from preschool to primary grades.
Databáze: OpenAIRE