Table 2.

Performance Criteria for Each Action Included in the Imitation Battery

Action	Performance Criteria
	Unilateral–Bilateral	Position	Location	Dynamic	Repetition	Direction
Manual
Clapping hands	Both hands move	Open hands	Hands touch each other	Audible sound	Repeated movement (3×)	NA
Patting legs with both hands	Both hands move	Open hands	Right hand touches right leg; left hand touches left leg	Audible sound	Repeated movement (3×)	NA
Touching nose with one finger	Only one hand moves	Extended index finger	Index finger touches the tip of the nose	NA	NA	NA
Waving goodbye	Only one hand moves	Raised hand with fingers pointing upward and palm facing outward	NA	At least 3 downward motions must be made by flexing either the fingers or the wrist	NA	Eye gaze directed at E1
Orofacial
Extending tongue	NA	NA	NA	Visible extension of the tongue outside of the mouth, followed by retraction of the tongue inside the mouth	NA	Eye gaze directed at E2
Making a noisy kiss	NA	NA	NA	Audible sound	NA	Eye gaze directed at E2

Note. E1 = experimenter who interacted with the participant; NA = not applicable.