Description
Ages: 2-10 and up, Testing Time:Â 15 to 20 minutes, Administration: Individual
Stuttering Severity Instrument–Fourth Edition (SSI-4) is a reliable and valid norm-referenced stuttering assessment that can be used for both clinical and search purposes. It measures stuttering severity in both children and adults in the four areas of speech behaviour:
- frequency
- duration
- physical concomitants
- naturalness of individual’s speech
Frequency is expressed in percent syllables stuttered and converted to scale scores of 2-18. Duration is timed to the nearest one tenth of a second and converted to scale scores of 2-18. The four types of Physical Concomitants are and converted to scale scores of 0-20. The SSI-4 can also be used in conjunction with the Stuttering Prediction Instruments for Young Children
