Table 3.

Effects on False Belief of Joint Engagement Experience Averaged Over All, the First Two, and the Last Two Visits

	All visits(18–30 mo)		Earlier visits(18–21 mo)		Later visits(27–30 mo)
Predictor Variable	β	p	β	p	β	p
Total joint engagement	.20	.182	.11	.462	.31	.034
Coordinated joint engagement	.28	.066	.34	.020	.27	.093
Symbol-infused joint engagement	.32	.051	.22	.184	.35	.030

Note. N = 42. The betas derive from nine multiple regressions, three for each predictor variable averaging over all five, two earlier, and two later visits, respectively; all regressions controlled for language comprehension scores.