Cause and Effect in User Interface Development

There is a lack of means of translating or relating work products from elicitation, such as work models, to design and using results of evaluation as feedback to design. This paper suggests that a richer model of evaluation be created that is built concurrently with the design activity and that records the cause / effect relationship between design and the problem domain and the implications work models have on design. It also suggests that the distinction between elicitation and evaluation be diminished. The paper presents two case studies from air traffic control and poses questions that are meant to motivate researchers and practioners.