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Stuttering Severity Instrument, Fourth Edition


Overview: A norm-referenced assessment of stuttering

Age Range: Children 2 - 10 years and older

Completion Time: 15-20 minutes

Norms: Normed on a sample of 72 preschool-age children, 139 school-age children, and 60 adults.

Publication Date: 2008


Product Details

The SSI-4 helps you measure stuttering severity in three areas of speech behavior:

  • Frequency: Expressed in percent of syllables stuttered and converted to scale scores of 2-18
  • Duration: Timed to the nearest one-tenth of a second and converted to scale scores of 2-18
  • Physical Concomitants: Four types provided; converted to scale scores of 0-20

Pricing & Ordering

Order Complete Kit

Software-based Scoring and Reporting
  • Kits



  • SSI-4 Complete Kit
    Includes Examiner's Manual and Picture Plates, 50 Test Records and Frequency Computation Forms, and Computerized Scoring Software 2.0 (PC)
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