Considering Quantitative and Qualitative Issues Together
David Trafimow · Qualitative Research in Psychology · 2013
Quantitative and qualitative researchers use different methods and have different goals. At the level of methods, quantitative researchers criticize qualitative researchers for not performing null hypothesis significance tests. However, I review literature showing that these are invalid, and so it is not particularly meaningful to criticize a lack of performance of something that should not be performed anyhow. More generally, I suggest that there are strengths and limitations to quantitative and qualitative methods. The more interesting question pertains to goals, and quantitative and qualitative researchers differ there, too. I briefly mention some limitations of the usual quantitative goal, which is to find causal mechanisms. But a typical qualitative goal of describing personal or subjective experience also has limitations. Finally, I compare both quantitative and qualitative social science research to physics and show that each has similarities and differences. There is much for quantitative and qualitative social science researchers to gain, not only by considering each other's methods and goals carefully but also by going outside social science and considering the accomplishments in nonsocial sciences.