UX Curve method aims at assisting users in retrospectively reporting how and why their experience with a product has changed over time.
The participant draws one or more curves to describe how the experience about a product has changed over time. The curve drawing area is formed of a timeline and a horizontal line that divides positive and negative experiences. Additional horizontal and vertical lines can be used as more precise scales for the quality of experience and for time periods. UX Curve is a pen-and-paper method, but there is a related tool called iScale, described elsewhere in this methods set.
Helps to reveal the most impactful experiences over time
Counting on memories rather than reality
Kujala, S., Roto, V., Vaananen-Vainio-Mattila, K., Karapanos, E., Sinnela, A.: UX Curve: A Method for Evaluating Long-Term User Experience. Interacting with Computers (2011). http://dx.doi.org/10.1016/j.intcom.2011.06.005
References describing the method