Table 1.

Presence/absence of ASHA and Strand features for assigning diagnosis of childhood apraxia of speech. Following the Murray et al. (2015) procedure, the first and second Strand features were incorporated into the second ASHA (2007) criterion. The third Strand feature was incorporated into the third ASHA criterion.

Subject	Age (years)	Gender	Handedness	Inconsistent errors on consonants and vowels (ASHA 1st criterion)	Lengthened and disrupted co-articulatory transitions between sounds and syllables (ASHA 2nd criterion/Strand 1st and 2nd criteria)	Inappropriate prosody (ASHA 3rd criterion Strand 3rd criterion)	Vowel or consonant distortions including distorted substitutions (Strand 4th criterion)	Groping (Strand 5th criterion)	Intrusive schwa (Strand 6th criterion)	Voicing errors (Strand, 7th criterion)	Slow rate (Strand, 8th criterion)	Slow DDK rate (Strand 9th criterion)	Increased difficulty with longer or phonetically more complex words (Strand 10th criterion)
1	5.1	M	R	+	+	+	+	+	−	+	+	+	+
2	7.0	M	R	+	+	+	+	+	−	+	+	+	+
3	6.2	M	R	+	+	+	+	+	−	+	+	+	+
4	6.2	F	R	+	−	+	+	+	−	−	−	+	+
5	6.0	M	L	+	+	+	+	+	−	+	+	+	+
6	6.0	F	R	+	+	−	+	−	−	+	+	+	+
7	9.6	M	R	+	+	+	+	+	+	+	+	+	+
8	5.5	F	R	+	+	+	+	+	−	+	+	+	+
9	7.0	M	R	+	+	+	+	+	−	+	+	+	+
10	4.9	M	R	+	+	+	+	−	−	+	−	+	+
11	17	M	R	+	+	+	−	+	−	+	+	+	+
12	6.4	M	R	+	+	+	+	+	−	+	+	+	+
13	5.2	F	R	+	+	−	+	−	−	−	+	+	+
14	6.6	M	R	+	+	−	+	+	−	+	+	+	+
15	5.1	M	R	+	+	+	+	−	−	−	−	+	+
16	6.7	M	R	+	+	+	+	+	−	+	+	+	+
17	6.6	M	L	+	+	+	+	+	−	−	+	+	+

F: female; M: male; R: right; L: left.