(SSI-4) Stuttering Severity Instrument, Fourth Edition
by Glyndon D. Riley
BENEFIT
Allows you to quickly quantify stuttering problems and evaluate the effectiveness of therapy
NORMS
Based on an age-stratified sample of 72 preschool children, 139 school-aged children, and 60 adults
SCORES
Scale scores ranging from 0 to 20
FORMAT
Elicits and evaluates speech samples; individually administered
ADMIN TIME
15-20 minutes
AGES
Over 2 years and 10 months
PUBLISH DATE
2009
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.