Introduction- In the previous articles of the research series, I delved into the issues of choosing a research topic, formulating research questions, undertaking literature reviews as well as choosing research design. As you will note, the focus was on ‘How’ to do research and ‘what’ to research. Much like general medical and surgical research, physiotherapy research in the 20th century was also driven by focus on objective designs such as RCTs and therefore rarely discussed the underlying philosophical assumptions related to research. This article is aimed at highlighting the need for researchers to understand the basic philosophical issues which impact on the research design and conduct and to discuss the four prevalent paradigms
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