Teaching quality improved only in the combined-intervention group and only during the first half of the program (measurement one to two), with an effect size of .44¶

Claim · All claims
Evidence · 1 study · causal r2 · q3 · i2 medium
Currency · newest study 2014 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i2 Experimental group 2 improved significantly in observed teaching quality from measurement one to two (effect size .44*) but remained stable from measurement two to three, while experimental group 1 and the control group remained stable throughout. → Azkiyah et al. 2014

Evidence¶

Azkiyah et al. 2014¶

S.N. Azkiyah, Simone Doolaard, Bert P. M. Creemers, M.P.C. (Greetje) Van Der Werf. (2014). The Effects of Two Intervention Programs on Teaching Quality and Student Achievement. Journal of Classroom Interaction, 49(1), 4-11. https://eric.ed.gov/?id=EJ1100411

q3 · i2 · causal · r2

Classroom-observation study of teaching quality measured three times during one school year with a 52-item instrument (generalized Kappa = .72; overall scale reliability α > .9). Effect sizes were .44* (M1–M2) and .09 (M2–M3) for experimental group 2, versus -.19 and .07 for experimental group 1.

"Table 2 also presents the effect size and paired t-test of each group from measurement to the next measurement, from which it is known that while both experimental group 1 and the control group remained stable throughout the three measures experimental group 2 improved significantly from measurement one to two but remained stable from measurement two to three."

Discussion¶

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