Stuttering Severity Instrument – 4th Edition (SSI-4)

Ages: 2-10 and up
Testing Time: 15 to 20 minutes
Administration: Individual
Complete Kit: Examiner‘s Manual and Picture Plates, 50 Test Record and Frequency Computation Forms, and CSSS 2.0, all in a sturdy
storage box.

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 behavior:

  • Frequency
  •  Duration
  •  Physical concomitants
  •  Naturalness of the individual's speech.