Convergence and Divergence in Prediction from Vocabulary and Speed of Word Processing

Overview

Journal Cogn Dev

Specialty Pediatrics

Date 2023 Feb 13

PMID 36776150

Authors

Erin Smolak

Jonathan Lee Helm

Tamara Patrucco-Nanchen

Pascal Zesiger

Margaret Friend

Affiliations

Soon will be listed here.

Abstract

Toddler vocabulary knowledge and speed of word processing are associated with downstream language and cognition. Here, we investigate whether these associations differ across measures. At age two, 101 participants (55 monolingual French-speaking and 46 monolingual English-speaking children) completed a two-alternative forced choice task, yielding measures of decontextualized vocabulary (number of correct responses) and haptic speed of word processing (latency of correct responses). At ages three, four, and five children completed a battery of language assessments and an executive function task. Growth curve models revealed that age-two vocabulary significantly predicted age-three performance (but not growth from age three to four or four to five) across all language assessments but speed of processing did not predict language outcomes in final models. Finally, speed of processing was correlated with executive function at age three whereas vocabulary was not. Results suggest that vocabulary is associated with a range of downstream language abilities whereas haptic speed of processing may be associated with executive control.

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