Concepts give structure and order to the world around us. However many learners are impeded by the perceived difficulty of concepts presented to them, and in the mode of presentation. Students' conceptual structures are studied in all curricular areas in the hope of remediating such impediments to learning. Much research has also been focused on establishing the nature of students' alternative conceptions. Repertory Grid Analysis (RGA) possesses a powerful set of tools that a researcher may utilise in order to examine the structures of conceptual frameworks. Modern RGA is computer-based and models of conceptual structures can be represented in graphical form. Protocols exist to compare the conceptual frameworks of a group of individuals and conceptual change can be monitored in a rigorous way that is not possible with customary concept mapping techniques.