Intervention effects on self-regulation as a mediator of depression and school engagement. Note: χ2(12) = 14.491, p = .27; CFI = .996, TLI = .987; RMSEA = .023; residuals among W3 depression and W3 self-regulation were allowed to correlate to enable a test of unique variance explained by each variable. They were correlated r = −.25, p < .01, ns p > .05, * p < .05, ** p < .01