and applies those principles to the assessment and treatment of communicative disorders. It begins with the history and basic principles of behaviorism, as well as a chapter examining Skinner's (1957) concept of verbal behavior and functional units of verbal behavior. The text then discusses functional behavior assessment, the formulation of operationally defined target behaviors, discrete trial treatment procedures, and various techniques for increasing desirable behaviors and decreasing undesirable behaviors. The concluding chapters describe single-case research designs that support the efficacy of behavioral principles and address ethical questions and historic controversies surrounding the application of those principles. Speech-language pathologists (SLPs) seek to change communicative behaviors in the clients they serve; the principles of behavioral science have many applications to the assessment and treatment of communicative disorders. There is a vast body of evidence indicating the efficacy of behavioral approaches in behavior modification, and SLPs have been tasked by their professional associations to employ evidence-based practices. Also, there is an appreciation for the usefulness of behavioral principles in treating clients with very severe communicative disorders, such as autism, apraxia, and dysfluency. This is evidenced by the development of the field of applied behavior analysis and the growing numbers of board certified behavior analysts (BCBA), with whom SLPs may be called upon to collaborate. Behavioral Principles in Communicative Disorders is primarily designed for practicing speech-language pathologists looking for detailed descriptions of evidence-based treatment procedures, as well as professors and students in university programs in communicative disorders. However, professionals in other fields, such as applied behavior analysis and special education, will also find this to be a highly useful text.

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