Faster processing speed at 19 months predicts faster syntactic growth between 19 and 30 months, controlling for concurrent vocabulary¶

Claim · All claims
Evidence · 1 study · associational r2 · q3
Currency · newest study 2019 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? Mean RT at 19 months predicted M3L growth between 19 and 30 months over and above vocabulary size at 19 months. → Michelle S. Peter 2019

Evidence¶

Michelle S. Peter 2019¶

Michelle S. Peter, Samantha Durrant, Andrew Jessop, Amy Bidgood, Julian M. Pine, Caroline F. Rowland. (2019). Does speed of processing or vocabulary size predict later language growth in toddlers? Cognitive Psychology 115 (2019) 101238. https://doi.org/10.1016/j.cogpsych.2019.101238

q3 · i? · associational · r2

Growth curve analysis of M3L growth between 19 and 30 months with Expressive Vocabulary and Mean RT at 19 months as predictors, fitted to a linear term for Measurement point. The abstract reports that "Faster processing speed did, however, predict faster syntactic growth across the whole sample, even when controlling for concurrent vocabulary".

"We next used growth curve analysis to assess whether speed of processing at 19months facilitates syntactic growth between 19 and 30months over and above vocabulary size, using the M3L score of the Lincoln CDI as a measure of syntactic ability (Fig. 5)."

Discussion¶

Related Claims¶

• Processing speed at 19 months does not significantly influence linear vocabulary growth between 19 and 30 months — related
• Vocabulary size at 19 months is a strong predictor of later syntactic growth between 19 and 30 months — related
• Processing speed at 19 months correlates with expressive vocabulary between 18 and 31 months, but processing speed at 25 and 31 months does not — related
• Early ANS acuity does not predict later expressive vocabulary; only initial vocabulary size predicts vocabulary six months later — related
• Lexical processing latency at 36 months does not predict concurrent grammatical complexity (LDS average length of phrase) — related
• Individual differences in processing speed remain broadly stable between 19 and 31 months — related
• Faster processing speed predicts greater vocabulary growth only for children with smaller vocabularies at 19 months — related
• Children get faster at recognising familiar words in speech between 19 and 31 months of age — related