Cognitive Task Analysis—A Review - Fundamentals and Assessment Tools for Occupational Ergonomics - page 728

evaluation, techniques such as CDM, TCTA, TTA, and DRX are required. Finally, the disposal stage
involves the assessment of the HF issues involved during the disposal of the system in question, in
order to ensure its efficient and safe disposal. HTA and HTA(T) could potentially be used to offer a
step-by-step description of the proposed disposal process, while the CWA technique could be used to
determine the work, organization, competencies, and strategies involved during the proposed disposal
process.
It is apparent that there is scope for much further work in the area of CTA. Further investigation into
the development of guidelines for the selection and usage of the various CTA techniques, the validation of
CTA techniques, the interpretation of CTA outputs, and the development of software assistance is
required. It is clear that for the future of CTA to be assured, a great deal of work is required. Without
this, the usefulness of CTA techniques may well be questioned.
Acknowledgment
The work reported in this paper was carried out under the U.K. Defence Technology Centre (DTC) for
Human Factors Integration (HFI), funded by the U.K. Ministry of Defence and the Defence Science and
Technology Laboratory (DSTL).
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