The purpose of this paper is to examine the utility of a qualitative 'card sort' research tool - when it is merged with traditional quantitative data gathering methods - to add to our understanding about the nature of competency-based approaches to leadership studies. The study demonstrates how a qualitative technique (card sort) was used for the task of testing a clinical leadership competencies model. All the steps in the card sort methodology are described through its application to the research problem. The paper concludes that card sort has considerable use in adding to the validity of research into the competency approach to leadership. The study reports only one single case. Therefore, the technique must be repeated to secure its validation as a testing technique. The card sort method is proven to be a viable tool to ascertain the individual subjects perceptions regarding competencies. The methodology is described in sufficient detail so as to enable its replication and application by professionals and academic researchers alike. Both groups will find this methodology useful and interesting. The paper seeks to improve upon existing methods for studying leadership competencies. By addressing the limitations of different methods, and also by merging different independent approaches, this project provides an innovative integrated knowledge that can be of significant value.