At the individual level, the Switch-Model most frequently provided the best fit to MLD children's reaction times, though a substantial subgroup fit the DS-Model or no model¶

Claim · All claims
Evidence · 1 study · causal r2 · q3
Currency · newest study 2014 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? Individual regression fits showed 20 children best fit by the Switch-Model, 10 by the DS-Model, 0 by the SBA-Model, and 14 by none of the models significantly. → Peters 2014

Evidence¶

Peters 2014¶

Peters, G., De Smedt, B., Torbeyns, J., Verschaffel, L., & Ghesquière, P. (2014). Subtraction by addition in children with mathematical learning disabilities. Learning and Instruction, 30, 1-8. https://doi.org/10.1016/j.learninstruc.2013.11.001

q3 · i? · causal · r2

Individual-level regression analysis, predicting each of the 44 MLD children's reaction times separately with the same three models. The Switch-Model "provided most frequently the best fit to the reaction times"; no effect size was printed.

"The frequencies of the best fitting model per individual were: 14 for whom none of the models fitted significantly, 10 for the DS-Model, 0 for the SBA-Model, and 20 for the Switch-model."

Discussion¶

Related Claims¶

• Children with MLD switch between direct subtraction and subtraction by addition based on the magnitude of the subtrahend when solving two-digit subtractions — related
• MLD children switch between direct subtraction and subtraction by addition only when the numerical distance between subtrahend and difference is large — related