Using cognitive work analysis to explore system flexibility

• Published in: Theoretical issues in ergonomics science 2010-05, Vol.11 (3), p.136-150
• Main Authors: Jenkins, DP, Stanton, NA, Walker, GH, Salmon, PM, Young, MS
• Format: Article
• Language: English
• Subjects: adaptability; cognitive work analysis; constraints; flexibility; Studies; systems
• ISSN: 1463-922X; 1464-536X
• DOI: 10.1080/14639220802609879

The presented work describes a structured approach for identifying flexible working practices in complex socio-technical systems; further, it presents a framework for the elicitation of design changes capable of increasing system adaptability. The proposed approach uses the first three phases of the cognitive work analysis framework: work domain analysis; control task analysis; and strategies analysis. Functions are extracted from an abstraction hierarchy; these are then explored in a number of different situations using a contextual activity template. These functions are then explored in greater detail with the strategies analysis phase. The contextual activity template is used to identify situations where functions are unable to perform; in order to increase the flexibility of the system, new strategies are then proposed and represented in strategies analyses flow diagrams. To communicate the approach, it is introduced using the familiar, domestic domain of an 'Apple iPod'. The paper presents a structured approach based upon cognitive work analysis for exploring system flexibility. The case study presented, an Apple iPod, shows how design changes to the system can be informed by this approach. This paper takes an existing approach and clarifies the link between analysis and design.