Table 1.

Descriptive statistics of the Early Childhood Vigilance Test (ECVT) proportion of time viewing the screen with the animation (Tobii automated scoring and PROCODER Webcam observer scoring); and the proportion of time viewing the animation when an animal character was moving across the screen (Tobii automated scoring only. N denotes the number of children for which this ECVT measure was within a valid range. When missing for the Tobii, this was usually because of inability of the infrared camera to track pupillary gaze throughout the test.

Early Childhood Vigilance Test (ECVT) Performance Measures	N	Mean	Std Dev	Minimum Score	Maximum Score
Tobii Eye Tracking Proportion of Total Time Viewing Screen During Animation	42#	0.78	0.14	0.29	0.99
Tobii Eye Tracking Proportion of Total Time Viewing Screen During Appearance of Moving Animals in Animation	41#	0.60	1.71	0.00	0.90
PROCODER webcam scoring of Proportion of Total Time Viewing Screen During Animation	44	0.67	0.18	0.09	0.97
Mullen Scales of Early Learning (MSEL) Composite Standard Score of Cognitive Ability	44	68.39	9.87	49	90
Behavior Rating Inventory of Executive Function Preschool (BRIEF-P); Global Executive Composite Standard Score	42	53.00	12.06	37	80