The evaluation in the staged test setting is conducted with Mixed Methods, which consists of three different approaches:
- The test facility was equipped with spatial sensors (position, gaze direction, acceleration, distance, contact, etc.) and the garment worn by the test subjects with a biofeedback sensor (skin conductance, GSR) to record somatic, psychophysiological responses. They allow the behavior of the test subjects to be quantitatively evaluated and categorized. This methodological approach corresponds to the «epistemology of sensor systems».
- Since the closed rooms do not allow direct observation, they were equipped with cameras. The recorded videos are displayed together with the biofeedback sensor measurements in real time in the self-developed data visualization software «EvaluationViewer». It allows the researchers to make a qualitative, ethnographic observation and heuristic assessment of the subjects› behavior in different situations and contexts.
- Following the test run, subjects are invited for an interview to capture the subjective experience. The interviews consist of a qualitative interview and quantitative Semantic Differentials. They are audio recorded and transcribed. The data visualization software «EvaluationViewer» is used during the interview to analyze critical situations together with the test persons.