The Society's Lecture 1987 The Use of Models in Human-Computer Interface Design

Abstract

A user-centred approach to human-computer interface design requires that the designer has appropriate tools to aid in the design process and employs iterative design procedures which incorporate user evaluations. The concept of using models of the user as an interface design tool is discussed, and several approaches to user modelling are described. These approaches are divided into the broad categories of conceptual and quantitative models. Conceptual models deal primarily with representations of users1 cognitive processes, structures and strategies. Quantitative models include performance, ergonomic, computer simulation and statistical models. Examples of both a conceptual and a quantitative model are provided to illustrate human-computer interface design implications. Some unresolved issues pertaining to both categories of models are discussed, and recommendations are made to improve modelling as an interface design tool.