2008: 3-week observation study with Emiel Krahmer and Marc Swerts.
Goal: Measure emotional engagement in a multiplayer game on the Nintendo Wii, to decide what is more engaging: cooperative (together against a computer) or versus (against each other).
Process: Observation of non-verbal behaviour by observation rating techniques, similar to this paper.
Results: Participants played tennis in two conditions. Their observation videos were rated by a second group of participants. We statistically analysed differences across cooperative/versus and won/lost conditions.