A framework for integrating cognitive task analysis into the system development process

This paper describes a process that orchestrates different types of specific CTA techniques to provide design relevant CTA results and integrates CTA results into the software development process. Two fundamental premises underlie the approach. First, CTA is more than the application of any single CTA technique. Instead, developing a meaningful understanding of a field of practice relies on multiple converging techniques in a bootstrapping process. The important issue from a CTA perspective is to evolve a model of the interconnections between the demands of the domain, the strategies and knowledge of practitioners, the cooperative interactions across human and machine agents, and how artifacts shape these strategies and coordinative activities across a series of different specific techniques. Second, since CTA is a means to support the design of computer-based artifacts that enhance human and team performance, CTA must be integrated into the software and system development process. Thus, the vision of CTA as an initial, self-contained technique that is handed-off to system designers is reconceived as an incremental process of uncovering the cognitive demands imposed on the operator(s) by the complexities and constraints of the domain.