This cluster of papers explores the intersection of user experience, design research, and human-computer interaction (HCI). It delves into topics such as persuasive technology, quantified self-tracking, participatory design, aesthetics, emotional design, and the use of wearable technology for health behavior change. The papers discuss methods for interaction design research, the impact of visual aesthetics on web usability, and the implications of user experience evaluation. They also address the role of technology in shaping human experiences and behaviors, with a focus on designing for motivation, engagement, and wellbeing.