Table 3.

Medians behavioral scores across episodes and Wilcoxon signed rank test details.

Measure	Mdn			Comparison
	FP	V	A
Play	100%	90%	80%	Free-play vs. video*	p = 0.009	z = −2.615
				Free-play vs. audio*	p < 0.001	z = −3.502
				Video vs. audio*	p = 0.005	z = −2.810
Interaction	57%	53%	48%	Free-play vs. video*	p = 0.004	z = −2.895
				Free-play vs. audio*	p = 0.007	z = −2.715
				Video vs. audio	p = 0.234	z = −1.189
Affect	3.17	3.22	3.00	Free-play vs. video	p = 0.279	z = −1.084
				Free-play vs. audio*	p = 0.001	z = −3.382
				Video vs. audio*	p = 0.022	z = −2.294
Response ratio	69%	66%	50%	Free-play vs. video	p = 1.000	z = 0.000
				Free-play vs. audio*	p = 0.022	z = −2.286
				Video vs. audio	p = 0.085	z = −1.720

*p < 0.05