Input quantity at 18 months predicts child vocabulary at 30 months over and above SES and prior vocabulary skill¶

Claim · All claims
Evidence · 1 study · associational r2 · q2
Currency · newest study 2012 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? Parent word tokens at 18 months marginally predict PPVT scores at 30 months after controlling for parent education and child word types at 14 months. → Rowe Meredith L 2012

Evidence¶

Rowe Meredith L 2012¶

Rowe Meredith L. (2012). A longitudinal investigation of the role of quantity and quality of child-directed speech in vocabulary development. Child development. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3440540/

q2 · i? · associational · r2

Longitudinal regression analysis of 50 dyads predicting PPVT at 30 months. "When parent tokens was added as a predictor with the controls (Model 2), it was a marginally significant positive predictor of PPVT scores at 30 months (p < 0.10)" with R-square increasing by 5 percent over the control model.

"When parent tokens was added as a predictor with the controls (Model 2), it was a marginally significant positive predictor of PPVT scores at 30 months (p < 0.10), and the R-square statistic increased by 5 percent."

Discussion¶

Related Claims¶

• Maternal talk quantity at 18 months predicts Spanish-learning children's vocabulary size and vocabulary gains at 24 months, controlling for earlier vocabulary — related
• Parental language input differs in quantity and quality across SES groups and relates to children's vocabulary, grammar, and processing development — a broader claim this one bears on
• Parent vocabulary diversity at 30 months predicts child PPVT at 42 months with quantity, SES, and prior vocabulary controlled — related