Willingness-to-intervene effect at Wave 2 was not statistically significant despite a medium effect size¶

Claim · All claims
Evidence · 1 study · causal r2 · q3 · i1 small
Currency · newest study 2016 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i1 At Wave 2, willingness to intervene showed the largest hypothesized increase (g = .32) but was not statistically significant. → Espelage 2016

Evidence¶

Espelage 2016¶

Espelage, D. L., Rose, C. A., & Polanin, J. R. (2016). Social-Emotional Learning Program to Promote Prosocial and Academic Skills Among Middle School Students With Disabilities. Remedial and Special Education, 37(6), 323–332. https://doi.org/10.1177/0741932515627475

q3 · i1 · causal · r2

Wave 2 ANCOVA analysis of the disability subsample. The article reports the Hedges' g of .32 "represents a medium effect" and is "equivalent to 1.78 odds ratio (OR)", higher than 19 of 23 significant ORs for bully perpetration in Ttofi and Farrington's meta-analysis.

"willingness to intervene showed the largest increase (g = .32, 95% confidence interval [CI] [–.14, .77]), but was not statistically significant."

Discussion¶

Related Claims¶

• Students with disabilities in SS-SSTP schools report greater willingness to intervene in bullying situations than control students after 2 years — reports the opposite
• In the Castleman et al. (2012) RCT, summer counseling showed a substantively important positive effect on fall college enrollment despite non-significant test statistics — related