Reading to Decide: Designing for Usability with a Needs, Users, and Learnings (NUL) Analysis
http://www.stc.org/confproceed/1995/PDFs/PG391392.PDF

Knodel, Elinor L.
STC Proceedings
1995

Abstract:

Information products that help users make decisions are a challenge to design, develop, and test for usability. We can begin to formulate a strategy for producing such documents effectively by doing a comprehensive preassessment of the specific project and by adapting testing methodologies from studies of creative thinking processes and expert system design.