Table 2.

Parameter Estimates from Initial Multi-Group Latent Growth Curve Models

	SDS				AIR-S
	Control		Intervention		Control		Intervention
	Estimate	SE	Estimate	SE	Estimate	SE	Estimate	SE
Fixed Effects Estimates
Intercept	99.47**	1.99	97.42	1.22	72.27**	0.74	68.85**	1.16
Slope	4.50**	1.34	5.12	0.95	1.27*	0.50	3.42**	0.82
Random Effects Estimates
Student
Variance Intercept	204.94**	44.94	211.79**	36.16	51.51**	13.75	75.93**	12.89
Variance Slope	4.27	18.59	53.75**	19.23	9.33	7.46	6.95	5.73
Covariance Intercept Slope	−5.38	22.12	−31.63	21.58	−2.53	8.24	−12.29	7.11
Classroom
Variance Intercept	0.54**	0.01	6.21**	0.60	0.73**	0.07	0.78**	0.04
Variance Slope	0.50**	0.05	0.48**	0.05	0.24**	0.02	0.07*	0.01
Covariance Intercept Slope	2.33**	0.23	1.34**	0.13	1.05**	0.07	0.72**	0.07
Residual Variance	140.53**	22.25	149.10**	18.23	62.43**	9.68	54.69**	6.79
-2LL	6994.0				6093.7
AIC	7030.0				6127.7

^**p < .01

^*p < .05