Enhanced System Usability Scale for Adaptive Courses

摘要

The usage and complexity of learning management systems is increasing continuously. The System Usability Scale (SUS) is a well-known and widely used scale to measure usability of web applications. It is also used in the context of e-learning and several applications were done in popular learning management systems. This study uses a version of the (SUS) translated from English to German on adaptive courses in Moodle and compares the results with the results from a previous study on non-adaptive courses. In addition to comparing results from adaptive and non-adaptive courses, this study also tests the two-factor structure consisting of usability and learnability and suggests two additional items to be included into the learnability factor. In the evaluation of adaptive courses, the total SUS value is lower than non-adaptive courses at our university. In particular, the SUS value for the learnability factor is far lower. It also shows that some items of our German version of the SUS are not suitable for evaluating adaptive courses.