This document discusses concept mapping and its role in interaction design. Concept mapping involves creating a visual representation of concepts and relationships using concepts, usually arranged hierarchically, and connected with linking words. It can be used for summarizing design sessions, establishing user interface vocabulary, and building a common understanding within project teams. The key elements of a concept map are a focus question, concept terms, linking lines between concepts, and labels on the links. There are different types of links such as causal and property links. Concept mapping is preferable to mind mapping for interaction design because it allows for labeling of links and a non-linear structure with multiple related concepts.