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. Author manuscript; available in PMC: 2012 Jan 1.
Published in final edited form as: J Commun Disord. 2010 Sep 17;44(1):116–129. doi: 10.1016/j.jcomdis.2010.09.001

Table 3.

Articulation Rate and Disfluency Profile of Participants

Measure Mean SD Range
Articulation rate (in phones per second) 6.98 1.48 4.42–9.58
Articulation rate (in syllables per second) 2.90 0.60 1.83–4.02
Prolongation duration (in seconds) 0.63 0.21 0.37–1.09
Repetition duration (in seconds) 0.87 0.38 0.28–1.69
Single-syllable-whole word repetition duration (in seconds) 0.99 0.25 0.65–1.63
Cluster duration (in seconds) 1.78 0.97 0.78–3.59