This document discusses different research approaches including quantitative, qualitative, and mixed methods. It provides details on the three components involved in each approach: philosophical worldviews, research designs, and specific research methods. As an example, a quantitative approach may use a post-positivist worldview, experimental design, and pretest/posttest measures. A qualitative approach could use a constructivist worldview, ethnographic design, and observation. A mixed methods approach may use a pragmatic worldview and collect both quantitative and qualitative data sequentially. The document emphasizes that the research problem and questions should determine which approach is best.