Using wind direction incorrectly or misidentifying agent type.
Finally, some of the contextual factors under which the processes from Figure 2 are performed include:
An awareness of high false alarm rates,
An awareness of high risk,
Location: CONUS or OCONUS,
Environmental stressors (heat, noise, etc.).
The proposed HFA will capture most of the cognitive tasks, common errors, and contextual factors via the event and evidence likelihoods in conjunction with the procedural tasks and resource knowledge programmed into the source code. Results from the initial HFA have demonstrated synthesis of information from multiple sources and formation of hypotheses on the potential types of CBRN attacks and highlight the information required for a firm conclusion about the CBRN environment.
This work is funded by DTRA/JSTO Project Number BB06MSB703. Mr. William J. Ginley and Mr. Donald W. MacFarlane of ECBC oversee the project. Valuable assistance has been provided by the JWARN Program Office, AFCESA, AFOTEC, and Optimetrics, Inc. This paper was prepared for the Chemical Biological Defense (CBD) Physical Science and Technology Conference held in New Orleans, Louisiana, 12-21 November 2008.
REFERENCES 1Klein, G. A., Calderwood, R., & MacGregor, D. (1989). Critical decision method for eliciting knowledge. IEEE Transactions on Systems, Man, and Cybernetics, 19(3), 462-472. Crandall, B., Klein, G., & Hoffman, R. (2006). Working Minds: A practitioners guide to Cognitive Task Analysis. Cambridge, MA: MIT Press. Mueller, T. Shane. A Bayesian Recognitional Decision Model. Submitted for publication. July 15, 2008 4Klein, G. A. (1993). A recognition-primed decision (RPD) model of rapid decision making. in G. A. Klein, J. Orasanu, R. Calderwood, & C. E. Zsombok (Eds.). Decision making in action: models and methods. Norwood, CT: Ablex. Shiffrin, R. M. & Steyvers, M. (1997). A model for recognition memory: REMretrieving effectively from memory. Psychonomic Bulletin & Review, 4, 145166. Mueller, S. T. & Shiffrin, R. M. (2006). REM II: A Model of the Developmental Co-Evolution of Episodic Memory and Semantic Knowledge. Paper presented at the International Conference on Learning and Development (ICDL), Bloomington, IN, June, 2006. Dennis, S. & Humphreys, M. S. (2001) A context noise model of episodic word recognition. Psychological Review, 108, 452478. 2 3 5 6 7