TABLE 4.

Caregiver implementation fidelity and child engagement.

Task	Caregiver implementation fidelity (%)				Child engagement (%)
	Ideal	Sufficient	Poor	Other	M (SD)	Minimum	Maximum
Attention: video	50	37.5	12.5	0	91 (13)	57	100
Developmental play	89.6	8.3	2.1	0	94 (8)	76	100
*Name call	93.8	6.2	0	0	87 (19)	32	100
Negative affect	87.5	12.5	0	0	78 (33)	14	100
Positive affect	100	0	0	0	84 (29)	0	100
Attention: toy	93.8	6.2	0	0	88 (17)	50	100
Parent–child interaction	100	0	0	0	91 (12)	57	100
*Discrete ASD presses	79.2	2.1	2.1	1.6	88 (23)	10	100
Parent–child story time	87.5	6.2	0	6.2	91 (14)	50	100
Overall	86.1	7.7	1.9	4.3	91 (9)	72	99

*Additional play-based presses were piloted in a portion of participants, focused on constructs such as stereotyped behaviors, response to changes in facial affect, and social smiles. These presses are included in engagement data but excluded in fidelity data.