This book accomplishes two key objectives with exceptional clarity. First, it effectively delineates the fundamental distinction between qualitative and quantitative research methodologies. Second, it offers practical guidance on their integration. The author achieves this with remarkable concision, striking an excellent balance between accessibility and academic rigor, particularly through thoughtful references to philosophy of science scholars.
In my opinion, the book's strongest section is its first part, which presents the conceptual framework (up to page 38). The subsequent sections, while comprehensive, focus on implementation guidelines that feel somewhat self-evident.
At its core, the book challenges how we commonly treat quantitative and qualitative methods as if they were of the same nature, when in fact they are based in two fundamentally different schools of thought (objectivism and constructivism) which are to some extent irreconcilable because they represent distinct ontological perspectives. As the author aptly notes, "mixed methods research is not simply about mixing data sets-it's about mixing philosophical points of view."
The text skillfully contrasts these approaches: quantitative methods, rooted in numbers, prioritize scale and causation, while qualitative methods focus on descriptive qualities, coherence, and participant perspectives. Quantitative research typically adopts an objectivist stance, assuming reality is stable and measurable (exemplified by binary gender categorization in surveys, which treats biological sex as an objective reality). In contrast, qualitative research embraces constructivism, where researchers build their understanding of concepts like gender from participants' own interpretations and experiences. This represents the constructivist view that humans actively construct reality through their interpretations (brief foot note: as Luckman explains, this process of "reification" occurs when these social constructions come to be viewed as natural phenomena).
These philosophical differences significantly impact research design. Quantitative methods resist mid-study modifications, prioritizing stable methods, participants, and categories to ensure rigor. Qualitative approaches, however, welcome ongoing adjustments as new insights emerge. This creates a natural tendency for quantitative research to follow top-down approaches, while qualitative research favors bottom-up methodologies. Particularly insightful is the book's definition of induction as the act to "elevate the meaning," which captures the essence of qualitative analysis.
In conclusion, this work serves as an excellent resource for developing more sophisticated research plans, successfully combining straightforward accessibility with scholarly rigor.