Quantitative and qualitative purists, however, view these two approaches as being based upon incompatible premises and techniques, and argue that mixing methods is neither meaningful nor valuable to pursue (Guba, 1990). Johnson and Onwuegbuzie (2004) have argued that there are some commonalities between quantitative and qualitative methods, and mixed methods research can narrow the divide between quantitative and qualitative researchers, enhancing the quality of a study.