In this chapter, Creswell explained purpose statements, research questions, hypotheses, and objectives very well. I have learned and distinguished between them.
The purpose statement: is used in both quantitative and qualitative research in order to advance the overall direction of the research. It usually appears as the last sentence of an introduction.
Research questions: are used in both quantitative and qualitative research in order to narrow the purpose statement to specific questions.
Hypothesis: are used in quantitative research in order to narrow the propose statement to specific prediction. It appears after the literature review or in a separate section titled “Hypothesis”.
Research objectives: are used in quantitative research in order to specify goals that researchers plan to achieve in studies. It appears at the end of the “statement of problem, after the literature review, or in a separate section.
Then Creswell moved to how to design quantitative purpose, questions, and hypothesis. An extensive explanation of Variables was addressed such as the family of variables. After that, guidelines of writing purpose statement, questions, and hypothesis were explained in order to help students in their initial research. Finally, the author moved to how design qualitative purpose and questions. Differences between quantitative and qualitative purpose and questions were explained perfectly. I am practicing to write purpose of statements, questions and hypothesis in both quantitative and qualitative research to improve my research skills.
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