Variation-theory-based teaching produces significantly larger gains than control teaching in 9th-grade students' alternations of points of view on a taught societal issue¶

Claim · All claims
Evidence · 1 study · causal r2 · q3 · i3 large
Currency · newest study 2025 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i3 In a randomized field experiment, treatment students made on average 1.85 more alternations after the intervention versus 0.44 for controls on the voting-age task, with a significant group × time interaction (ηp2 = 0.39). → Kristoffer Larsson · Klas Andersson 2025

Evidence¶

Kristoffer Larsson · Klas Andersson 2025¶

Kristoffer Larsson · Klas Andersson. (2025). Testing the use of variation theory in teaching critical thinking—a field experimental study. Instructional Science (2025) 53:1025–1046. https://doi.org/10.1007/s11251-025-09721-y

q3 · i3 · causal · r2

Two-group (treatment n = 39, control n = 53) × 2 time mixed-design ANOVA on the voting-age essay task in a randomized field experiment. The group × time interaction was significant with ηp2 = 0.39, "showing the effect of the treatment relative to the control condition"; treatment students gained 1.85 alternations versus 0.44 for controls.

"These main effects were qualified by a group × time interaction, F (1, 90) = 57.53, MSE = 0.39, p < 0.001, ηp2 = 0.39 showing the effect of the treatment relative to the control condition from pre- to post-test."

Discussion¶

Related Claims¶

• Variation-theory-based teaching significantly improves students' alternation of points of view on novel, untaught societal issues (transfer), with smaller effects than on the taught task
• Randomization check found no significant pre-intervention differences between treatment and control groups on pre-test or 8th-grade merit rating — related