The discussion section of a dissertation has four key purposes: 1) interpret and explain results, 2) answer the research question, 3) justify the research approach, and 4) critically evaluate the study. It should review findings in the context of previous literature and demonstrate an understanding of the study's limitations and implications. Outlining the discussion section in advance is recommended to map out how results fit within the broader context. The discussion is typically one of the longest sections and may include subheadings to aid navigation.