Field-based motivation interventions produce on average a medium overall effect size (0.49), with quasi-experimental designs yielding larger effects than randomized designs, and studies using multiple theoretical frameworks averaging 0.41¶

Claim · All claims
Evidence · 1 study (3 entries) · theoretical r3 · q4 · i2 medium
Currency · newest study 2026 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q4 i2 A meta-analysis of 74 field-based motivation intervention studies found a medium average effect size of 0.49 across outcomes. → Linnenbrink-Garcia 2026 q4 i? The only significant moderator in that meta-analysis was experimental design type, with quasi-experimental designs yielding larger effects than randomized designs. → Linnenbrink-Garcia 2026 (2) q4 i2 Studies coded as using multiple theoretical frameworks averaged an effect size of 0.41, similar to other intervention types, and very few were theoretically integrated in the authors' sense. → Linnenbrink-Garcia 2026 (3)

Evidence¶

Linnenbrink-Garcia 2026¶

Linnenbrink-Garcia, L., Wigfield, A., Cabrera, L., Mouzaoir, S., McKinney, D., Liu, P. P., Marchand, G., Schmidt, J. A., Harris, C. J., & Guthrie, J. (2026). The Case for Multifaceted, Integrative Motivation Interventions Embedded in Classrooms. Educational Psychology Review. https://doi.org/10.1007/s10648-026-10177-w

q4 · i2 · theoretical · r3

Meta-analysis by Lazowski and Hulleman of 74 published and unpublished motivation-theory intervention studies in educational (non-laboratory) contexts, as reported by this review. It produced "a medium overall effect size (0.49)" across outcomes, with significant heterogeneity.

"They found that these field-based motivation interventions were generally successful, producing on average a medium overall effect size (0.49) across a variety of outcomes tested."

Linnenbrink-Garcia 2026 (2)¶

Linnenbrink-Garcia, L., Wigfield, A., Cabrera, L., Mouzaoir, S., McKinney, D., Liu, P. P., Marchand, G., Schmidt, J. A., Harris, C. J., & Guthrie, J. (2026). The Case for Multifaceted, Integrative Motivation Interventions Embedded in Classrooms. Educational Psychology Review. https://doi.org/10.1007/s10648-026-10177-w

q4 · i? · theoretical · r3

In the same meta-analysis of field-based motivation interventions, no other moderators (theoretical framework, grade level, dependent variable type) explained the variation; the design-type contrast above was the only significant moderator reported.

"the only significant moderator identified was the type of experimental design, with quasi-experimental designs yielding larger effects than randomized designs."

Linnenbrink-Garcia 2026 (3)¶

Linnenbrink-Garcia, L., Wigfield, A., Cabrera, L., Mouzaoir, S., McKinney, D., Liu, P. P., Marchand, G., Schmidt, J. A., Harris, C. J., & Guthrie, J. (2026). The Case for Multifaceted, Integrative Motivation Interventions Embedded in Classrooms. Educational Psychology Review. https://doi.org/10.1007/s10648-026-10177-w

q4 · i2 · theoretical · r3

In the same meta-analysis, the "multiple theoretical frameworks" code applied to 23 of 92 effect sizes averaged an effect size of 0.41, a medium magnitude. The review authors note that very few of those studies were theoretically integrated in the way they advocate.

"The average effect size for this sub-type of studies was 0.41, suggesting a similar effect size to other types of interventions tested."

Discussion¶

Related Claims¶

• Across 11 CORI studies, mean effect sizes ranged from 0.49 for self-efficacy to 1.20 for intrinsic motivation, generally exceeding average motivation-intervention effects — related
• Interventions targeting motivation produce positive achievement outcomes of medium average size (d = 0.49) regardless of which motivation theory underlies them — related