Across all three experiments jointly, the interaction between treatment (contrasts versus control) and measurement occasion was significant, with a reliable quadratic trend¶
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Evidence · 1 study (2 entries) · designr3·q3
Currency · newest study 2011 · not yet checked against its sources · not reviewed by a person
Subclaims¶
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q3 i? The interaction between experimental group and measurement occasion in a 3×2×3 repeated measures ANOVA was significant, F(2, 318) = 5.78, p = 0.003. → Mona Holmqvist 2011
q3 i? Decomposing the interaction showed a reliable quadratic trend, F(1, 159) = 11.43, p = 0.001, while the linear trend interaction was not reliable. → Mona Holmqvist 2011 (2)
Evidence¶
Mona Holmqvist 2011¶
Mona Holmqvist. (2011). Teachers' learning in a learning study. Instr Sci 39:497–511. https://doi.org/10.1007/s11251-010-9138-1
q3 · i? · design · r3
A 3×2×3 repeated measures ANOVA over all three experiments jointly, with experiment and treatment as between-subjects factors and three measurement occasions; test scores were arcsine-transformed proportions. The effect of critical interest was the treatment × occasion interaction.
"This interaction proved to be significant, F (2, 318) = 5.78; p = 0.003."
Mona Holmqvist 2011 (2)¶
Mona Holmqvist. (2011). Teachers' learning in a learning study. Instr Sci 39:497–511. https://doi.org/10.1007/s11251-010-9138-1
q3 · i? · design · r3
Trend contrasts over the three measurement occasions: the quadratic trend (an early rise followed by decline, expected for the control group) was reliable; the linear contrast from pre-test to delayed post-test was not. The author calls this modest support for the hypothesis.
"Decomposing it into trend contrasts showed a reliable quadratic trend, F (1, 159) = 11.43; p = 0.001. The linear trend interaction was not reliable."
Discussion¶
Related Claims¶
- Video-based treatment produces significant macrostructure gains over five weeks, with a significant Group x Test interaction — related
- Engagement peaked at the middle of the Mindsets program and declined slightly by post-test, showing a significant negative quadratic trend — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
treatment-occasion-interaction-significant |
title |
Across all three experiments jointly, the interaction between treatment (contrasts versus control) and measurement occasion was significant, with a reliable quadratic trend |
description |
Across all three experiments jointly, the interaction between treatment (contrasts versus control) and measurement occasion was significant, with a reliable quadratic trend |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2011 |
generated |
by process:wiki-ingest on 2026-10-18 |
trust |
unverified — no one has confirmed this page's content |
sources |
2 — mona-holmqvist-2011, mona-holmqvist-2011-2 |
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