Claims

Experimental and control groups showed no significant pre-test difference before the intervention

Claim · All claims
Evidence · 1 study · causal r1 · q2
Currency · newest study 2015 · not yet checked against its sources · not reviewed by a person

Subclaims

Reading the evidence codes

q is the design tier, i the impact, n the sample, and the kind with its r the rigour judged within that kind: what each code means.

This claim: no standardized effect is recorded in observations/ for it yet, so no benchmark reading is possible.

q2 i? Pre-test scores did not differ significantly between the groups, suggesting equivalent prior knowledge. → Dağdelen and Kosterelioglu 2015

Evidence

Dağdelen and Kosterelioglu 2015

Orhan Dağdelen, İlker Kösterelioğlu. (2015). Effect of Conceptual Change Texts for Overcoming Misconceptions in “People and Management” Unit. International Electronic Journal of Elementary Education, 8(1), 99-112. https://eric.ed.gov/?id=EJ1078838

q2 · i? · causal · r1

Independent samples t-test on PMAT pre-test scores of the two intact 4th grade classes (n= 23 each), means Mexp= 10.00 and Mcontrol= 10.22. No effect size is printed for this comparison; the article says it "may point to the fact that both groups had equivalent levels of prior information".

"Pre-test scores do not show meaningful differences between experimental and control group students ( t(44)= -0.272; p> 0.05)."

Discussion

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