Table 2.

Wavering behavior coding scheme.

Action	Definition
Move to	The subject moves their hand from a resting, turning or touching location to another resting, turning, or touching location.
Touch	The subject touches the screen at the position of an item (or very close to) with tip of their finger, thumb, or knuckle.
Turn	The subject's hand changes direction, either while above or on the way to an item, or back towards an item it has just moved away from.
Rest	The subject's hand hovers over a stimulus without touching it.