SSI-4: Stuttering Severity Instrument - Fourth Edition

SSI-4 measures stuttering severity in both children and adults in the four areas of speech behavior:

• Frequency (expressed in percent syllables stutterd and converted to the scale scores of 2-18)
• Duration (times to the nearest one tenth of a second and converted to scale scores of 2-18)
• Physical concomitants (converted to scale scores of 0-20)
• Naturalness of the individual’s speech.

SSI-4 has four components, each of which is used to assess and monitor the stuttering severity in both children and adults for clinical and research use: (1) Examiner’s Manual and Picture Plates, (2) Test Record and Frequency Computation Forms, (3) Subjective stuttering Scales, and (4) Computerized Scoring of stuttering Severity software version 2.0.

The Computerized Scoring of the Stuttering Severity (CSSS-2.0) software is provided to facilitate the calculation of frequency and duration. The CSSS-2.0 automatically produces a record of the percentage of syllables stuttered (frequency) and the duration of the three longest stuttering events.

Complete kit includes Examiner's Manual, Picture Plates, 50 Test Record and Frequency Forms, Subjective Stuttering Scales and Computerized Scoring of Stuttering Severity software. Ages 2 through 10+. Testing time: 15 to 20 minutes.