This paper explores the communication of emotion through shape using Morph-UX, a web-based application for emotive form design which uses physiological features correlated with emotional experience as input to control objects attributes in real-time. Centered on the body, our approach aims to provide visual feedback as to how bodily sensations associated with the expression of emotions can alter, transform and modulate shapes. Preliminary results from a 30-participant user study show that shapes generated using Morph-UX accurately convey users' experienced emotional valence and arousal. We describe the design and development of Morph-UX and highlight how embodied shapes can be used to communicate affect, ideas and intentions. Implications for further exploration of physiological signals as a design material are also discussed.

In this paper, we present an off-the-shelf UX evaluation tool which contextualizes users' physiological and behavioral signals while interacting with a system. The proposed tool triangulates users' gaze data with inferred users' cognitive and emotional states to produce user experience (UX) heatmaps, which show where users were looking when they experienced specific cognitive and emotional states. Results show that for a given cognitive state (i.e., cognitive load), the proposed UX heatmap was able to effectively highlight the areas where users experienced different levels of cognitive load on an interface. The proposed tool enables the visual analysis of users' various emotional and cognitive states for specific areas on a given interface, and also to compare users' states across multiple interfaces, which should be useful for both UX researchers and practitioners.