An important challenge in higher education today is the growing tutor-student ratio that diminishes the 'human touch'. As learning and teaching ultimately form an interpersonal process, this will lead to student discontent and impact on their learning. Whilst there is little that teaching practitioners can do in terms of the growing student…

Whenever one uses a composite scale score from item responses, one is tacitly assuming that the scale is dominantly unidimensional. Investigating the unidimensionality of item response data is an essential component of construct validity. Yet, there is no universally accepted technique or set of rules to determine the number of factors to retain…