Table 3.

Fixed effects estimates predicting children’s story comprehension (N = 150 individuals from 10 schools).

	Estimates	SE	95% CI
Fixed effects
Intercept	14.01	2.87	8.33, 19.69
Sex (=boys)	-0.09	0.59	-1.25, 1.07
Oral reading fluency	0.07∗∗	0.02	0.02, 0.11
Mental imagery skills	0.04	0.92	-1.79, 1.86
Test condition (=1)	-7.85∗∗	2.66	-13.12, -2.58
Test condition (=2)	-1.33	2.76	-6.79, 4.13
Interaction test condition (=1) ∗ mental imagery skills	2.54∗	1.15	0.26, 4.82
Interaction test condition (=2) ∗ mental imagery skills	0.47	1.18	-1.85, 2.80
Random effects
Residual	11.78∗∗∗	1.43	9.29, 14.94
Intercept	0.34	0.58	0.01, 9.72
Estimated parameters		10
-2 restricted log likelihood		789.97

Test condition 1 = experimental picture version; test condition 2 = pictures-and-text version; test condition 3 = text-only version.

^∗p < 0.05, ^∗∗p < 0.01, ^∗∗∗p < 0.001.