Table 7.

Effect sizes and standard errors of multilevel models for post-intervention problem behavior Study 2.

	Self-reported problem behavior (SE)	Teacher-reported problem behavior (SE)
Gendera	0.12 (0.17)	0.13 (0.21)
Pre-intervention problem behavior	0.59 (0.05)***	0.78 (0.06)***
Dummy 1: AA vs. CRb	0.15 (0.17)	-0.07 (0.21)
Dummy 2: AR vs. CRc	0.03 (0.17)	-0.06 (0.21)
Gender ∗ Dummy 1	-0.23 (0.24)	-0.06 (0.29)
Gender ∗ Dummy 2	0.08 (0.23)	-0.24 (0.29)

^∗p < 0.05, ^∗∗p < 0.01, ^∗∗∗p < 0.001. Parameter estimates (while controlling for effects of other parameters) can be interpreted as Cohen’s d; ^aGirl = 0, Boy = 1; ^bCR = 0, AR = 0, AA = 1; ^cCR = 0, AA = 0, AR = 1.