"Seriously, I'm Okay With Criticism": Assessing Participants Emotional Reactions During Participatory User Sessions via EEG Hyperscanning Analysis

We investigate using electroencephalography (EEG) devices to improve participatory user sessions, which are common in HCI research and practice. Using writing consultations as a critical example of such participatory user sessions, we evaluate six emotional reactions between a consultant and five patrons. EEG data was collected in consultant-patron dyads during each session and then analyzed concurrently. The analysis highlights the critical interaction effect between consultant and patron emotional levels, including stress levels, usually focused on criticism of the patron's writing, and excitement centered on praising the patron's writing. Findings point to the need to establish a positive relationship between the consultant and participants via eye contact and a welcoming environment. The findings imply that there is value in hyperscanning investigations to prepare HCI experts for qualitative user interviews, focus groups, and similar participatory user sessions and hint at the potential for neuroscience-informed practices in HCI processes.