Children with unexpected poor comprehension show a profound vocabulary deficit despite average-to-above-average word reading¶

Claim · All claims
Evidence · 1 study · associational r2 · q3
Currency · newest study 2018 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? Among three comprehension groups, UPC subjects scored lowest on vocabulary measures, almost one standard deviation below developmental expectations on PPVT and WISC Vocabulary. → Li 2018

Evidence¶

Li 2018¶

Li, M., Malins, J. G., DeMille, M. M. C., Lovett, M. W., Truong, D. T., Epstein, K., Lacadie, C., Mehta, C., Bosson-Heenan, J., Gruen, J. R., Frijters, J. C. and the GRaD Study Consortium. (2018). A molecular-genetic and imaging-genetic approach to specific comprehension difficulties in children. npj Science of Learning 3:20. https://doi.org/10.1038/s41539-018-0034-9

q3 · i? · associational · r2

Group comparison on standardized reading and reading-related measures (Table 2) in the GRaD sample of 1432 children; UPC n = 216, EAC n = 530, UGC n = 223. The article reports "significant differences among the three groups, with UPC subjects scoring the lowest" on vocabulary.

"However, in vocabulary, there were signi ficant differences among the three groups, with UPC subjects scoring the lowest: almost one standard deviation below developmental expectations (PPVT and WISC Vocabulary)."

Discussion¶

Related Claims¶

• READ1 RU2Short presence significantly predicts poor comprehension despite adequate word reading after covariate control — related
• UPC children's word reading is average to above average while comprehension falls one to two standard deviations below expectations — related
• The vocabulary weakness of children with SCD is best characterized as a developmental delay rather than a developmental deficit — related
• Most children with SCD have vocabulary weaknesses, with intact vocabulary being rare — related
• Children with specific reading comprehension difficulties show substantially poorer reading comprehension than vocabulary relative to typical readers — related