A discussion of modes and motives for usability evaluation
Roger A. Grice, Lenore S. Ridgway · IEEE Transactions on Professional Communication · 1989
The evaluation purposes that can be served at various stages in the development of a document are analyzed. Three testing modes-exploring, verifying, and comparing-are discussed, and their use with various forms of evaluation and feedback modes is examined. The generalization of evaluation findings and the need to make evaluation an integral part of document development are discussed.>