Keywords:Mixed Methods Research, Qualitative Research, Quantitative Research
This article is written to introduce and illustrate the guideline for mixed methods research which has become increasingly common in recent years. Combining qualitative and quantitative research indeed warrants the research quality from integrating methodology benefits from both approaches. The article is based on research foundation of mixed method from combining strengths and avoiding weaknesses of qualitative and quantitative single approach. Five justifications for combining qualitative and quantitative approaches are asserted as researcher’s rationale to select mixed methods approach. There are 6 categories of mixed method research design which are named as convergent parallel design, explanatory sequential design, exploratory sequential design, embedded design, transformative design, and multi-phase design. Finally the procedure of mixed methods research consists of 8 steps and the detail of procedure is varied according to each type of mixed methods research design. Examples of Thai published research in each design are included to vivid the readers understanding. The author aims to clarify the process and design of mixed methods research and help advance its concepts and practices.