In this chapter, the reader is guided through processes of assessment of BFRBs and the functional analysis that underlies and guides ComB treatment for each client. Standardized BFRB assessment instruments are presented along with ComB-specific assessment forms developed by the authors. Guidance is provided in utilizing awareness-raising techniques, such as self-monitoring and recording, that are designed to enhance the client’s focus on details about their picking or pulling that are crucial for designing an individualized and comprehensive ComB treatment plan. The critical functional analysis is described in detail, copiously illustrated with an in-depth case illustration provided to detail the SCAMP-based functional analytic approach. Forms are provided to aid readers in performing the functional analysis in preparation for ensuing chapters that describe the treatment intervention process.