11:15   Oral Session 2-KzZ – Affective Interfaces
Chair: Peter Robinson
25 mins
You Make Me Happy: Using an Adaptive Affective Interface to Investigate the Effect of Social Presence on Positive Emotion Induction
Suleman Shahid, Emiel Krahmer, Marc Swerts, Willem A. Melder, Mark A. Neerincx
Abstract: Affective user interfaces are usually characterized as interfaces that try to recognize, interpret and respond to human emotions. In this paper, we take a different perspective and investigate if and how a digital, interactive adaptive mirror, which is a game-like affective interface, can induce positive emotions in participants and how the social presence of a friend affects the emotion induction. Results show that participants systematically feel more positive after an affective mirror session and co-presence of a friend is shown to boost this effect.
25 mins
Detection of Anger with and without Control for Affective Computing Systems
Elena Spiridon, Stephen Fairclough
Abstract: Feedback from affective computing interfaces should improve awareness and self-regulation of negative emotional states, such as anger. The aim of this study was to identify cardiovascular and electroencephalography-based indicators of anger, in combination with level of control. Forty participants were split into four experimental groups: anger/no control, anger/control, neutral/no control and neutral/control. Anger (anger state vs. neutral state) was manipulated via verbal mood induction. In addition, participants were exposed to a computer-based problem-solving task where the keyboard either worked correctly (control) or malfunctioned (no control). Various psychophysiological variables (including blood pressure, cardiovascular impedance, electroencephalography and facial electromyography), in addition to self-report variables, were obtained. Statistical analyses of self-report variables indicated that manipulation of anger and control was successful. Blood pressure and electroencephalography were found to be sensitive to the anger with no control state. Implications of the study are discussed in relation to the development of biocybernetic systems to monitor different categories of anger.
25 mins
Mogic: Expressing Affective Messages Between Empty Nesters and Their Children
Emma Neuhaus-Klamer, Pavan Dadlani
Abstract: This paper describes the evaluation of a communication system called ‘Mogic’ that aims at stimulating social interaction. This system was designed for empty nesters, parents whose children have left the home, and their children.The focus of current communication means empty nesters and their children us is the content of the communication, while there is a need for sharing emotions and feelings with each other. Mogic enables empty nesters and their children to share emotions with each other. The model behind Mogic for combining emotions with movements and colour was evaluated. The experiment provided insights into which colours people choose to express certain emotions and which movements people naturally make to express certain emotions. Using naturally chosen movements and colours to express emotions differs from recognizing and perceiving emotions from movements and colours. Many participants indicated they already associate certain colours with expressing certain emotions. Anger and enjoyment were expressed very similar in terms of movements. Almost all participants had either a strong preference for using colours or for using movements for expressing emotions. The results of the empirical study with the system suggest that participants find it more difficult to express emotions than to perceive emotions. The findings for this study are valuable for designing products that make use of tangible interaction and aim at expressing emotions.