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. Author manuscript; available in PMC: 2010 Oct 1.
Published in final edited form as: J Speech Lang Hear Res. 2009 Aug 20;52(5):1286–1301. doi: 10.1044/1092-4388(2009/08-0181)

Figure 1.

Figure 1

Mean speech effort (EFF), speech naturalness (NA), and stutterfree syllables per minute (SFSPM) for the persistent stuttering (PS) group (left) and the control group (right), with percent syllables stuttered (%SS) for the PS group only, for the five 1-min oral reading trials in each phase (A1-B-A2), for each of four fluency-inducing conditions. Note that on the NA and EFF ordinate axis “1 = highly natural sounding speech”(NA) and “1 = highly effortless speech”.