In AHA! the user model consists of concepts with attributes. Most concepts have a meaning in the application domain. But nothing in AHA! depends on this being the case. Concepts can be used simply as placeholders for any kind of information.
AHA! also has a special concept, called “personal”, that is intended for storing application-independent information about the user.
Using a form we can let users set values for attributes of any concept, including “personal”. The form on this viewgraph shows settings for GLvsAN, meaning global versus analytical, and for VERBvsIM, meaning verbaliser versus imager. These attributes are of the type integer, meaning that they can represent a sliding scale between being 100% certain the user has one style, 100% certain the user has the other style, or somewhere in between, where the system is no so sure.