This course introduces students to the theory and practice of single-subject research design data collection and applications, visual display and interpretation of data. In addition, it introduces students to the identification of measurement errors and adjusting techniques as part of the ongoing data collection and evaluation during assessment and treatment analysis. The course emphasizes developing skills for writing through literature reviews and crafting detailed research proposal. By the end of the course students will be able to design, analyze, and critique behavior analysis research, enhancing their ability to contribute effectively to research in both academic and applied settings in ABA.