Table 2.

Summary of frames dropped due to lack of face in frame, away looks, and low-confidence from iCatcher.

	% of no-face frames		% of away frames		% of frames with iCatcher confidence <.85
Tasks (# of trials)	Age 6	Age 12	Age 6	Age 12	Age 6	Age 12
Geo-Social Attention (10)	3.4	5.8	9.4	2.6	9.7	9.3
The Visual Paired Comparison (VPC) (6)	4.4	11.7	19.7	14.8	10.2	11.4
Prediction (14)	3.0	8.6	8.4	7.2	21.4	19.6
Audio-Visual Synchrony (8)	3.9	7.7	11.2	7.1	11.7	10.7
Word Comprehension (20)	5.1	5.8	21.6	11.9	9.0	9.8
Numeracy (4)	4.1	4.3	10.2	7.7	5.8	7.5
Helper/Hinderer (2)	7.8	7.3	12.6	10.9	11.3	12.5

% of no-face frames = iCatcher+ was not able to identify a face in the frame (e.g., child’s head was not in view or child was looking back at parent).

% of away frames = iCatcher+ detected a face but gaze was estimated to be off screen.

% of frames with iCatcher confidence <.85 (probability that iCatcher+ prediction of class is correct based on softmax function).