Phonation interval modification and speech performance quality during fluency-inducing conditions by adults who stutter.

Purpose: To relate changes in four variables previously defined as characteristic of normally fluent speech to changes in phonatory behavior during oral reading by persons who stutter (PWS) and normally fluent controls under multiple fluency-inducing (FI) conditions.

Method: Twelve PWS and 12 controls each completed 4 ABA experiments. During A phases, participants read normally.