SBI gains in proportional problem-solving are maintained 9 weeks after the intervention for students with MD-PS¶

Claim · All claims
Evidence · 1 study · q3 peer-reviewed experiment · i1 small
Currency · newest study 2017 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i1 SBI students scored on average 0.25 SDs higher than control students on the PPS delayed posttest administered 9 weeks after treatment, a printed standardized effect of 0.25 SDs. → Jitendra 2017

q3 i? The treatment effect on PPS total score persisted at delayed posttest, with SBI students scoring 0.25 SDs higher than control students. → Jitendra 2017

Evidence¶

Jitendra 2017¶

Jitendra, A. K., Harwell, M. R., Dupuis, D. N., & Karl, S. R. (2017). A Randomized Trial of the Effects of Schema-Based Instruction on Proportional Problem-Solving for Students With Mathematics Problem-Solving Difficulties. Journal of Learning Disabilities, 50(3), 322–336. https://doi.org/10.1177/0022219416629646

q3 · i1

HLM analysis of the delayed posttest (ICC = .19) for the same randomized cluster sample. The treatment effect was significant (p = .025), with a printed standardized effect size of 0.25 SDs: SBI students were "scoring on average 0.25 SDs higher than those in the control group" and treatment accounted for 16% of intercept variance.

"translates to SBI students scoring on average 0.25 SDs higher than those in the control group or treatment accounted for 16% of intercept variance beyond that attributable to other predictors in the model"

Discussion¶

Related Claims¶

• Students with MD-PS and their teachers reported positive perceptions of the SBI intervention's diagrams and problem-solving procedures — related
• SBI did not moderate student growth over time in proportional problem solving for students with MD-PS — related
• Schema-based instruction improves immediate proportional problem-solving performance of seventh graders with mathematics problem-solving difficulties — related
• SBI effects for students with MD-PS hold for ratio and proportion problems at both time points but for percent problems only at immediate posttest — a narrower finding that bears on this claim