Claims

Music workshop students developed more positive geography-related attitudes than controls (effect size=.569)

Claim · All claims
Evidence · 1 study · causal r2 · q3 · i2 medium
Currency · newest study 2013 · 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.

q3 i2 The treatment group's ToGRA change exceeded the control group's by 0.55 points, statistically significant, with a medium effect size of 0.569. → Richardson 2013

Evidence

Richardson 2013

Richardson, Ronald; Brouillette, Liane. (2013). Historic and Ethnic Music Found to Increase Geographic Understanding: A Quasi-Experimental Study. Journal for Learning through the Arts, 9(1). http://escholarship.org/uc/item/71g4x3cr

q3 · i2 · causal · r2

Change-score analysis of the 29-question ToGRA attitude survey for the same 215 students: control attitudes declined (mean change -0.11) while treatment attitudes rose (0.45); the article reports the difference statistically significant, p=<0.0001, and an overall effect size of 0.569 (medium).

"The mean change in control group scores, -0.11 (with a standard deviation of 0.52) is subtracted from the mean change in treatment group scores, 0.45 (with a standard deviation of 0.60) resulting in a Difference of Means score of 0.4"

Discussion

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