Table 2.

Rates of Nonsyllabic Vocalizations, Canonical Syllables, Syllabic Vocalizations, Word Types, Word Tokens, and Syllabic Vocalization Ratios by Group

	ASD n = 22		TD n = 22		DLD n = 8
	Mean (SD)	Range	Mean (SD)	Range	Mean (SD)	Range
# Vocalizations	41.6 (39.3)	0–134	37.2 (43.0)	2–168	10.4 (8.5)	0–24
# Nonsyllabic vocalizations	20.9 (22.1)	0–90	2.8 (2.9)**	0–9	5.1 (5.2)*	0–16
# Canonical syllables	9.8 (15.4)	0–50	4.9 (7.8)	0–32	2.3 (2.9)	0–8
# Syllabic vocalizations	20.8 (34.0)	0–118	34.4 (41.7)	0–163	5.3 (6.4)	0–19
# Word types	3.2 (8.8)	0–38	8.7 (8.2)	0–31	1.0 (1.6)	0–4
# Word tokens	7.7 (20.6)	0–71	20.9 (27.0)	0–114	1.9 (3.8)	0–11
Syllabic vocalization ratio	0.32 (0.36)	0–0.98	0.84 (0.25)**	0–1.0	0.41 (0.35)	0–0.9

Note. Significance reflects Bonferroni corrected post hoc comparison between ASD and TD or DLD.

^*P < 0.05.

^**P < 0.01.