TABLE 2.

Summary of most frequently examined behaviors in included studies.

Behavior	# Studies	# Abnormal	Type of abnormality
Speech
Accuracy	52	44 (85%)	Reduced accuracy
Consistency/stability	13	11 (85%)	Reduced consistency; increased consistency
Rate	13	7 (54%)	Slower rate; less entrainment
Duration	11	9 (82%)	Longer duration; less difference in duration between speaking conditions
Formant values	8	6 (75%)	Outcome measures too variable to discern a dominant pattern
Coordination/coarticulation	6	6 (100%)	Reduced coordination; difficulty with coarticulation
Vocalization quality	5	3 (60%)	Reduced speechlike vocalizations; increased atypical vocalizations
Intelligibility	4	3 (75%)	Reduced intelligibility
Nonspeech
Nonspeech oral movements	28	20 (71%)	Reduced nonspeech oromotor control; differences in brain activity
Feeding
Eating/feeding skills	19	11 (58%)	Reduced oral control for feeding