At high WMC, children with math difficulties performed significantly better under visual-only strategy conditions relative to other conditions at Wave 4¶

Claim · All claims
Evidence · 1 study · causal r2 · q3
Currency · newest study 2013 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? When WMC was set to a high level, a Tukey test indicated a significant advantage for the visual-only condition for children with MD (visual-only > verbal-only > control > verbal + visual). → Swanson 2013

Evidence¶

Swanson 2013¶

Swanson, H. L., Lussier, C. M., & Orosco, M. J. (2013). Cognitive Strategies, Working Memory, and Growth in Word Problem Solving in Children With Math Difficulties. Journal of Learning Disabilities, 48(4), 339–358. doi:10.1177/0022219413498771

q3 · i? · causal · r2

Wave 4 intent-to-treat analysis across testing waves; the Tukey test showed "a significant (ps < .05) advantage for the visual-only condition for children with MD" over the other three conditions.

"When treatment conditions were made conditional on setting WMC to a high level, a Tukey test indicated a significant (ps < .05) advantage for the visual-only condition for children with MD (visual-only > verbal-only > control > verbal + visual)."

Discussion¶

Related Claims¶

• Children without math difficulties outperformed children with math difficulties in word problem solving overall, but gaps narrowed on some conditions at Wave 2 — related
• At low WMC, the visual-only condition was a significant disadvantage for children with math difficulties — related
• At high pretest WMC, the visual-only condition outperformed verbal-only, verbal+visual, and control on solution accuracy — possibly the same claim (merge candidate)
• Strategy instruction effects on word problem solving in children with math difficulties are moderated by working memory capacity, favoring high-WMC levels — a broader claim this one bears on
• Working memory capacity correlates with outcomes differently across strategy conditions, with compensatory negative correlations under materials-only instruction — related