Outcome measurement in adult stuttering therapy: a self-rating profile.

The speech and language therapy profession is committed to the use of outcome measurement to maximise both efficiency and efficacy. However, measuring change in adult stuttering therapy is particularly problematic. It is proposed that outcomes of therapy should include stuttering behaviours, reactions to stuttering and handicap resulting from stuttering. Current methods of measuring change are reviewed. The Wright & Ayre Stuttering Self-Rating Profile (WASSP) is described which includes clients' perceptions of stuttering behaviours, avoidance, feelings and disadvantage. Issues of reliability and validity are considered.