schema

n. 1. An outline, often in graphic form. 2. A mental representation of a thing, category, or event and especially one that is self-structured for easy access in information processing. 3. In cognitive therapy, a negative and irrational idea about the self which brings about erratic or ineffectual behavior and negative feelings and is not modified by contradictory information but which may be altered in a more realistic and effective way through conscious examination and reality testing.