CEVAP:

• A single researcher may have difficulty in carrying out both qualitative and quantitative research, especially if two or more approaches are expected to be done concurrently (i.e., the study might require a research team).
• The researcher has to learn about multiple methods and approaches and understand how to combine them appropriately.
• Methodological purists contend that one should always work within either a qualitative or quantitative paradigm.
• It is more expensive.
• It is more time-consuming.
• Some of the details of mixed research remain to be worked out fully by research methodologists (e.g., problems of paradigm mixing, techniques for qualitatively analyzing quantitative data, how to integrate data and inferences, and how to interpret conflicting results).