  Evaluating the user experience of a software system is an essential final
step of every research. Several concepts such as flow, affective state,
presences, or immersion exist to measure user experience. Typical measurement
techniques analyze physiological data, gameplay data, and questionnaires.
Qualitative feedback methods are another approach to collect detailed user
insights. In this position paper, we will discuss how we used questionnaires
and qualitative feedback methods in previous mixed reality work to measure user
experience. We will present several measurement examples, discuss their current
limitations, and provide guideline propositions to support comparable mixed
reality user experience research in the future.
