Psychometric Instruments in Software Engineering Research on Personality: Status Quo After Fifty Years

Context: Although software development is a human activity, Software Engineering (SE) research has focused mostly on processes and tools, making human factors underrepresented. This kind of research may be improved using knowledge from human-focused disciplines. An example of missed opportunities is how SE employs psychometric instruments. Objective: Provide an overview of psychometric instruments in SE research regarding personality and provide recommendations on when adopting them. Method: We conducted a systematic mapping to build a catalog of instruments used within SE for assessing personality and reviewed their use from a multidisciplinary perspective of SE and social science. Results: We contribute with an update of a secondary study covering fifty years of research (1970 to 2020). We observed remaining discrepancies between one of the most adopted instruments (MBTI) and existing recommendations in the literature. We also emphasize that several instruments refer to the Five-Factor Model, and specific advice on how to apply this model within the SE domain is still missing. Conclusion: The findings show that the adoption of psychometric instruments regarding personality in SE needs to be improved, ideally with the support of social sciences researchers. We believe that the review presented in this study can help to understand limitations and evolve in this direction.