Figure 1.
Mean percent syllables stuttered (%SS), stutter-free syllables per minute (SFSPM), speech naturalness (NA) and speech effort (EFF) scores for each 1-min trial within each ABA experimental triad for persons who stutter (PWS) and control groups. Naturalness and Effort are scored from 1 (preferable: highly natural or highly effortless) to 9 (less preferable: highly unnatural or highly effortful); decreases in these variables are interpreted as improvements.