Table 3:

Number (and percent) of infants with sufficient usable data (first column, as % of full sample of 55 [6-mo: 29, 12-mo: 26] infants) and fixation on a single side >80% of the task (second column, as % of infants with usable data).

	Participants with usable data		Participants with side bias		Median (IQR) number of trials with usable data (excluding infants with side bias)
Tasks*	Age 6	Age 12	Age 6	Age 12	Age 6	Age 12
Geo-Social Attention	28 (96.6)	26 (100.0)	5 (17.9)	6 (23.1)	6.0 (4.5, 9.5)	8.00 (5.8, 9.00
The Visual Paired Comparison (VPC)	26 (89.7)	23 (88.5)	1 (3.8)	2 (8.7)	5.0 (3.0, 6.0)	5.0 (4.0, 5.0)
Prediction**	28 (96.6)	26 (100.0)	---	---	11.0 (10.0, 12.0)	10.0 (8.5, 11.5)
Audio-Visual Synchrony	27 (93.1)	25 (96.2)	7 (25.9)	7 (28.0)	7.0 (4.0, 8.0)	8.0 (5.2, 8.0)
Word Comprehension	21 (72.4)	19 (73.1)	3 (14.2)	4 (21.1)	8.0 (4.5, 12.0)	8.0 (4.0, 10.0)
Numeracy	24 (82.8)	23 (88.5)	10 (41.7)	12 (52.2)	4.0 (3.0, 4.0)	4.0 (2.0, 4.0)
Helper/Hinderer	20 (67.0)	19 (73.1)	1 (5.0)	2 (10.5)	2.0 (1.0, 2.0)	2.0 (1.0, 2.0)

^**No side bias was assessed for the Prediction task because analysis was restricted to the short AEM window.