This tutorial in nonlinear phonology introduces the basic concepts and assumptions of this new theoretical approach and then demonstrates clinical applications of the theory for assessment and intervention. Data from a child with a severe phonological disorder are used to illustrate aspects of nonlinear theory. (Author/DB)

Reviews research on the efficacy of treatment for voice disorders. Voice disorders are defined, their frequency of occurrence is reported, and their impact on individuals is documented. Treatment related to vocal misuse, medical or physical conditions, and psychogenic disorders are discussed and case studies are presented. (Author/CR)