Application of the Engagement Questionnaire (EQ) to compare methodological differences in sensory and consumer testing.

Understanding the panelist experience in sensory and consumer testing is a critical step in methodological development that improves data reliability. Therefore, the Engagement Questionnaire (EQ) was recently developed to characterize consumer engagement during sensory and consumer testing and to provide a novel and translatable metric for researchers to compare methodologies. Presently, we assessed whether relatively minor methodological manipulations to common consumer testing paradigms impact panelist engagement. Specifically, panelist engagement was measured in three scenarios: over the course of a two-day consumer hedonic evaluation (Experiment 1), with differing Just-About-Right (JAR) questionnaire formats in an evaluation (Experiment 2), and with a time pressure element imposed during a consumer acceptability test (Experiment 3). In Experiment 1, subjects remained actively involved in the evaluation across both days of testing, however, they found more purpose and affective value in the task after the second day. In Experiment 2, changing the structure of JAR questions did not impact subject's level of active involvement with the task, yet certain JAR question structures did elicit higher purposeful intent and affective value in subjects. Surprisingly, in Experiment 3, subjects were less actively involved in the time-pressure condition; purposeful intent and affective value were consistent across both conditions. Overall, the EQ was able to resolve differences in panelists' perceived level of engagement across all the experimental manipulations, aiding in discussion regarding the effect even minor manipulations might have on consumer panelists. The EQ is a valuable asset to methodological development and enables comparisons of differing sensory and consumer methodologies.