The same intervention significantly improved learners' problem-solving, with a medium practical effect (d = 0.6)¶

Claim · All claims
Evidence · 1 study · causal r2 · q2 · i2 medium
Currency · newest study 2015 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i2 The experimental group's problem-solving LS mean rose from 2.07 to 2.31 after the first intervention, a statistically significant improvement of medium practical significance. → Meintjes A 2015

Evidence¶

Meintjes A 2015¶

Meintjes A, Henrico A & Kroon J. (2015). Teaching problem-solving competency in Business Studies at secondary school level. South African Journal of Education, 35(3), Art. #1102. https://doi.org/10.15700/saje.v35n3a1102

q2 · i2 · causal · r2

ANOVA of problem-solving scores for the experimental group (n = 23) in the quasi-experimental pre-test/post-test design; Bonferroni p < 0.05 (p = 0.00000), and "a d value of 0.6 indicates that the improvement was also of medium practical significance".

"The LS mean value for the pre-test on problem -solving was 2.07 and for post -test 1 it was 2.31, which means that for the experimental group there was a statistically sig -nificant improvement in problem -solving after the implementation of the intervention on the experimental group."

Discussion¶

Learner Variables¶

• Problem Solving — outcome: instruction changes it

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