ABSTRACT
This chapter outlines the process for undertaking a desktop evaluation of design concepts generated using the Cognitive Work Analysis (CWA) Design Toolkit. It shows how models of an existing system generated via CWA and Hierarchical Task Analysis (HTA) can be used in a systematic and robust way to model how system functioning and behaviour may be positively or negatively impacted by the introduction of new components. CWA is uniquely suited to the evaluation of the impacts of system change due to its formative nature. Although the evaluation process provided some interesting findings into the potential effectiveness of the different concepts, the findings were not always clear-cut. In terms of the Work Domain Analysis (WDA) measures supported by each of the designs, the Heavy Vehicle GPS design best supported the values and priority measures, with the objects introduced in this design supporting all but one.
