MAP-01-011 HFI Technical Guide - Human Factors Integration ...

MAP-01-011 – HFI Technical Guide (STGP 11)observable behaviour exhibited during task performance. As a result,crucial components of team performance, such as SA, decision-makingand workload cannot be assessed accurately using a BOS.• A BOS analysis is time consuming to conduct, requiring the developmentof the scale, training of the raters, observation of the task under analysisand rating of the required behaviours. Even for a small-scale analysis,considerable time is required.• The reliability of such techniques remains a concern.A3.9.6Decision Requirements ExerciseThe team Decision Requirements Exercise (DRX) is an adaptation of the criticaldecision method that is used to highlight critical decisions made by a teamsduring task performance, and also to analyse the factors surrounding decisionse.g. why the decision was made, how it was made, what factors affected thedecision etc. The DRX technique was originally used during the training ofnuclear power control room crews, as a debriefing tool. Typically, a decisionrequirements table is constructed and a number of critical decisions are analysedwithin a group-interview type scenario. It is recommend that DRX should beused for the following purposes to:• Calibrate a teams understanding of its own objectives.• Calibrate understanding of roles, functions and the requirements of eachteam member.• Highlight any potential barriers to information flow.• Facilitate the sharing of knowledge and expertise across team members.• Advantages• Specific decisions are analysed and recommendations made regarding theachievement of effective decision making in future similar scenarios.• The output seems to be very useful for use in the training of teamprocedures.• The analyst can control the analysis, selecting the decisions that areanalysed and also the factors surrounding the decisions that are focussedupon.• The DRX can be used to elicit specific information regarding team decisionmaking in complex systems.• The incidents, which the technique concentrates on, have alreadyoccurred, removing the need for costly, time consuming work to constructevent simulations.May 2006 Page A3-80 Issue 4