Articles by Martin Schrepp

Dr. Schrepp works as a UX designer and researcher at SAP SE (Germany). His research interests include HCI, UX evaluation methods, statistics, exploratory data analysis, and cognitive sciences.

On the Usage of Cronbach’s Alpha to Measure Reliability of UX Scales

Abstract If, as UX professionals, we measure the user experience of a product with a questionnaire, then scale reliability is important. If the scales of the questionnaire show low reliability, we cannot guarantee stable measurements and should not base important design decisions on such data. There are several methods available to estimate the reliability of […] [Read More]