Evaluative Methods for Rapid Prototypes

Abstract

There are a variety of techniques that can evaluate rapid prototype design alternatives for human-machine interfaces. These techniques can be used singly, or in combination. Empirical techniques require that the analyst obtain data from respondents who exercise a rapid prototype. Empirical techniques include questionnaires, observation and unobtrusive methods of data collection, and retention tests. Analytic techniques do not require data collection, but require that the analyst have a formal description of the human-machine interface and use methods for evaluating these descriptions. Analytic techniques include structured walkthroughs, behavioral models of human-machine interaction, Operator Sequence Diagrams (OSD), and Link Analysis. Empirical and analytical techniques can lead to systems that are more likely to meet users' needs, especially when the analyst employs several techniques simultaneously.