Table 2.

Series of regression models predicting children’s MCDI vocabulary comprehension based on child age, intervention condition, parent mindsets and higher order interaction terms [95% Confidence Intervals]

	Model 1	Model 2	Model 3	Model 4
Fixed Effects
Intercept (centered at 12 months)	22.00 (2.16)[17.73, 26.28]*	21.11 (3.15)[14.94, 27.28]*	20.30 (5.10)[10.32, 30.27]*	30.69 (7.34)[16.72, 44.67]*
Linear Growth (in months)	5.91 (0.24)[5.43, 6.39]*	5.70 (0.35)[5.02, 6.39]*	6.45 (0.58)[5.31, 7.59]*	7.84 (0.89)[6.10, 9.57]*
Condition		1.72 (4.36)[−6.80, 10.24]		−17.47 (9.60)[−35.75, 0.78]
Condition X Linear Growth		0.41 (0.49)[−0.55, 1.36]		−2.40 (1.16)[−4.66, −0.13]*
Mindsets			0.66 (1.99)[−3.22, 4.54]	−4.35 (2.88)[−9.83, 1.13]
Mindsets X Linear Growth			−0.20 (0.22)[−0.65, 0.24]	−0.84 (0.34)[−1.51, −0.17]*
Condition X Mindsets				8.51 (3.74)[1.38, 15.64]*
Condition X Mindsets X Linear				1.15 (0.45)[0.26, 2.03]*
Random Effects
Intercept	12.87	12.99	13.02	11.92
Residual	10.13	10.14	10.17	10.01
Goodness of Fit (AIC)	1590.4	1593.3	1515.2	1507.8

^*Note.indicates confidence intervals that do not include 0