Research on public service interpreting employs a number of methods to examine a range of variables, from specific linguistic and paralinguistic variables to spatial positioning, agency, and ethics. These methods, however, require explicit recognition of the researcher’s positionality in order to ensure appropriate data analysis and interpretation of results. This article examines the unique aspects of the interpreting studies research that requires reflection when conducting work in this area. Two specific types of bias, namely social desirability bias and the Hawthorne effect, are discussed in detail to illustrate the type of reflective practice required to ensure valid, reliable, and credible results. The article concludes with a brief reflection on how positionality may be a starting point for discussion surrounding the agency of the researcher.