About This Product
BY GLYNDON D. RILEY
The fourth edition of this enduring test offers updated norms, quicker administration, and computer scoring. Like previous versions, the SSI-4 evaluates speaking samples according to specific criteria:
Frequency—expressed as percentage of syllables stuttered
Duration—average length of the three longest stuttering events
Physical Concomitants—distracting sounds, facial grimaces, head movements, and arm and leg movements
Naturalness of Speech
Well suited to both clinical and research use, the SSI-4 continues to provide a reliable measure of stuttering severity.