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The purpose of this study was to analyze the research literature on three-tier models of reading and behavior and to provide a descriptive analysis and meta-analytic review of these models. An in-depth review of 17 articles was conducted on the similarities and differences between and among three-tier models of reading (n = 5), models of behavior (n = 7), and integrated models (combining reading and behavior; n = 5). Descriptive analyses were conducted across three areas: student populations, intervention level, and setting. Finally, a meta-analytic review was completed of 11 of the 17 investigations. Scientific evidence shows that one or more levels of these three-tier models leads to improved reading or behavior performance; however, there is a paucity of research detailing the integration of three-tier reading and behavior models. Limitations and directions for future research are discussed. [ABSTRACT FROM AUTHOR]