Always Learning
International Sites


To serve you better, we will be implementing upgrades to our order systems. This will temporarily delay shipping of all orders starting at 1:00 p.m. CST on May 25 until June 1. We encourage customers who have critical delivery deadlines to order on or before May 25 at 1:00 p.m. CST.


  Change Community

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
Print This Page

You May Also Like

Quick View

Order Help

Get instructions and help on ordering online or from our product catalog

Ordering FAQs

Contact us online

P: 800.627.7271
F: 800.232.1223