Measuring the added value of haptic feedback
© 2017 IEEE. While there is an increased appreciation for integrating haptic feedback with audio-visual content, there is still a lack of understanding of how to quantify the added value of touch for a user's experience (UX) of multimedia content. Here we focus on three main concepts to measure this added value: UX, emotions, and expectations. We present a case study measuring the added value of haptic feedback for a standardized set of audio-visual content (i.e., short video clips), comparing two haptic stimulation modalities (i.e., mid-air vs. vibro-tactile stimuli). Our findings demonstrate that UX of haptically-enhanced audio-visual content is perceived as a more pleasant, unpredictable, and creative experience. The users' overall liking increases together with a positive change of the users' expectations, independently from the haptic stimulation modality. We discuss how our approach provides the foundation for future work on developing a measurement model to predict the added value of haptic feedback for users' experiences within and beyond the multimedia context.