Sari Kujala is Adjunct professor and Post doc researcher at Aalto University, Department of Design, Helsinki. Her background is in psychology and cognitive science. In addition, she has received Ph.D. in human-computer interaction. Her research interests focus on user-centered design, user involvement, user experience and long-term user experience.

Michael Minge is a postdoctoral research fellow at the post graduate program ?prometei ? Prospective Design of Human-Technology Interaction? at Technische Universit├Ąt Berlin, where he received his PhD in 2011. His background is psychology and Human Factors engineering. His research areas are User Experience, temporal dynamics, and methods for measuring emotions in human-technology interaction.

Anna E. Pohlmeyer is Assistant Professor at Delft University of Technology, Department of Industrial Design, with a background in cognitive psychology. She received a doctorate degree in engineering design (summa cum laude) from TU Berlin and the University of Luxembourg (Cotutelle Agreement). Her research interests include Design for Happiness, User-Centered Design, Human-Technology Interaction, and Continuous User Experience.

Marlene Vogel is a researcher at the post graduate program ?prometei ? Prospective Design of Human-Technology Interaction? at Technische Universit├Ąt Berlin. She holds a Diploma in Product and Industrial Design and received a master degree in Human Factors. Her research focuses on User Experience, influencing effects on long-term UX, and User-Centered Design.