Table 4.

Steps for a data collection session, each session lasted approximately two hours.

Step	Allocated time	Description
Read and sign consent forms	10 min	Experimenters provided consent forms to participants, and two written consents each for participation and the collection of privacy-sensitive data were obtained.
Choose sides and the order	5 min	Participants were assigned to either argue in favor of or against accepting refugees and decided on the first speaker.
Prepare debate	15 min	Participants were provided with supplementary materials to prepare their arguments.
Equip sensors	10 min	Experimenters explained wearable devices to participants and assisted them in wearing devices.
Measure baseline	2 min	A baseline corresponding to a neutral state was measured for each participant.
Overview debate	5 min	The moderator explained the debate rules and notified participants that they are allowed to intervene.
Debate	10 min	Participants could speak for two consecutive minutes during their turns and they were notified twice at 30 and 60 seconds before the end of the debate.
Annotate emotions	60 min	Participants annotated emotions at intervals of every 5 seconds, watching footage of themselves and their partners.