This Practice Description is a research-based practice for students with disabilities based on one methodologically sound group study with random assignment across 20 students with disabilities, one methodologically sound group study without random assignment across 18 students with disabilities and one methodologically sound single-subject study across three students with disabilities; a research-based practice for students with learning disabilities based on one methodologically sound group study with random assignment across 12 participants with learning disabilities and one methodologically sound group study without random assignment across 12 participants with learning disabilities; and a research-based practice for students with emotional disorders based on one methodologically sound group study with random assignment across eight participants with emotional disorders, one methodologically sound group study without random assignment across six participants with emotional disorders, and one methodologically single-subject study across three participants with emotional disabilities. 

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