Apraxia of Speech Rating Scale 3.0

0		1	2	3	4
Not observed in any task		Infrequent	Frequent but not pervasive	Nearly always evident but not marked in severity	Nearly always evident and marked in severity
No more than one occurrence		Noted more than once (but less than about 20%)	Noted 20–50% of all utterances, but not on most tasks or utterances	Noted on many utterances on most tasks but not enough to decrease overall intelligibility	Noted on most utterances on most tasks and severe enough to impact intelligibility or Noted on all utterances on all tasks
				Score no higher than “2” if present only during repetition
Performance on AMRs and SMRs considered only for items 9–11
Phonetic Features
1	Sound distortions (excluding distorted substitutions or distorted additions)
2	Distorted sound substitutions
3	Distorted sound additions (including intrusive schwa)
4	Increased sound distortions or distorted sound substitutions with increased utterance length or increased syllable/word articulatory complexity
Prosodic Features
5	Syllable segmentation within words > 1 syllable (Brief silent interval between syllables and/or inappropriate equalized stress across syllables)
6	Syllable segmentation across words in phrases/sentences (Increased inter-word intervals and/or inappropriate equalized stress across words)
7	Slow overall speech rate (apart from pauses for word retrieval and/or verbal formulation)
8	Lengthened vowel &/or consonant segments independent of overall slow speaking rate
Other
9	RATE ONLY FOR AMRs (alternating motion rates, as in rapid repetition of “puh puh puh”): Off-target (in place, manner, and/or voicing) speech AMR’s (includes distortions and distorted substitutions). Score on severity only: 0= AMRs normal; 1= rare and mild distortions, 2= frequent but mild distortions; 3 = moderate distortions, 4 = severe distortions
10	RATE ONLY FOR SMRs (sequential motion rates, as in rapid repetition of “puh tuh kuh”): Deliberate, slowly sequenced, segmented (gaps between sequences), and/or distorted (including distorted substitutions) speech SMRs in comparison to AMRs. Rate the best effort Score on severity only: 0= not noted, SMRs normal; 1= slow, 2= mildly segmented and/or distorted; 3 = moderately segmented and/or distorted, 4 = severely segmented and/or distorted.
11	One or both of the following: Consistently Reduced words per breath group during phrase/sentence production relative to maximum vowel duration; reduced # of AMR repetitions per breath group in the absence of decreased respiratory capacity. Score on maximum number of syllables/repetitions per breath group: 0 = more than 7; 1= 6–7; 2 = 4–5; 3 = 3–4; 4 = 2 or less
12	Visible or silent articulatory groping
13	Audible false starts/restarts including sound repetitions (excluding fillers and unambiguous language-related false starts (e.g., sp…fork)