Visualizing facilitates the conceptualization of the multiple factors involved in understanding complex processes and the associated problem-solving. Problem-solving involves cognition, and cognition includes perception. Visualization improves the capability to perceive and, therefore, assists the cognitive process. In the perception of shape lies the beginning of concept formation; it is the grasping of structural features found in or imposed on the stimulus material. When a person perceives a diagram, chart, symbol, word, formula, or some other visualization, he manifests his intelligence and cognition by his ability to understand the implication of what he sees.