Qualitative methods for engineering systems: Why we need them and how to use them

This paper discusses the role that qualitative methods can and should play in engineering systems research and lays out the process of doing good qualitative research. As engineering research increasingly focuses on sociotechnical systems, in which human behavior and organizational context play important roles in system behavior, there is an increasing need for the insights qualitative research can provide. This paper synthesizes the literature on qualitative methods and lessons from the authors’ experience employing qualitative methods to study a variety of engineering systems. We hope that by framing the key issues clearly, other engineers who hope to join the qualitative path will build on what we have learned so far to enable greater insight into engineering systems.