Designing an equally usable and emotionally appealing product remains a challenge for product developers, not least due to conflicting goals. Product developers need to constantly map the affective user requirements to the product, whereby the requirements for the emotional and usable product design often cannot be equally addressed. The systematic approach presented can help product developers in conflicting decision-making situations to represent these affective user requirements by selecting and prioritising context-relevant influencing factors using multi-criteria decision-making methods.

Subjective product quality is a fundamental aspect to maintain a high level of user acceptance and to provide a good user experience. Prototypes can be used to evaluate subjective product quality in early design phases. We conducted an empirical study to examine the influence of different (re)presentations of prototypes determined by the chosen technology (2D image, VR, AR, 3D print) and the user's technology acceptance. Based on the results we recommend 2D images as most reliable for evaluating subjective product quality.

Shame is an emotion most of us are well familiar with and has taken an increasing role in public discourse in the last couple of years. While design literature has seen a strong tradition for evoking positive emotions, shame seems to be somewhat neglected. As a step towards a more practical understanding of shame in design, this article combines design literature with studies from other disciplines in an attempt to give an overview of designers' current notion of shame, and discuss if and how this notion could be further explored into concepts and tools that may benefit future designers.