First Step to Success shows potentially positive but not statistically significant effects on emotional/internal behavior (effect size 0.26)¶

Claim · All claims
Evidence · 1 study · review r3 · q3 · i1 small
Currency · newest study 2012 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i1 Walker et al. (1998) found no statistically significant difference on the CBCL-TRF Withdrawn Subscale, but the positive effect size of 0.26 was substantively important by WWC criteria. → First Step to Success: WWC Intervention Report 2012

Evidence¶

First Step to Success: WWC Intervention Report 2012¶

First Step to Success: WWC Intervention Report. (2012). What Works Clearinghouse, U.S. Department of Education. https://ies.ed.gov/ncee/wwc/InterventionReport/179

q3 · i1 · review · r3

RCT of 46 kindergarten children in Eugene, Oregon randomly assigned to intervention or wait-list control. The ANCOVA-adjusted effect size was "0.26" with p = 0.63 — not statistically significant but meeting the WWC substantively-important threshold, giving a potentially positive effects rating.

"Walker et al. (1998) found, and the WWC confirmed, no statistically significant difference between treatment and comparison groups on the CBCL-TRF Withdrawn Subscale. However, the effect was positive and large enough to be substantively important according to WWC criteria (that is, at least 0.25 standard deviations)."

Discussion¶

Related Claims¶

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