Currently there is disagreement on the best tools for measuring situation awareness (SA) as well as the nature of the processes that underlie it. The current project examined the intrusiveness of two commonly used techniques, the Situation Awareness Global Assessment Technique (SAGAT) and the Situation Present Assessment Method (SPAM), on operator SA, workload, and performance by manipulating the key features distinguishing the techniques—whether displays remain visible and whether scenarios are paused. The results indicated that both factors affect operator SA, workload, and performance. We also found that the intrusiveness associated with blanking displays and not pausing scenarios depended on the type of information being queried. Specifically, making information more difficult to access from external displays had a more negative effect on the ability to answer queries pertaining to specific aircraft as opposed to general sector characteristics. These results support the Situated SA approach, which holds that operators often off-load information to their environment to limit what they must store internally.
|Commitee:||Strybel, Thomas Z., Vu, Kim-Phuong L.|
|School:||California State University, Long Beach|
|School Location:||United States -- California|
|Source:||MAI 51/05M(E), Masters Abstracts International|
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