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PubMed2001

Seeing where you are heading: integrating environmental and egocentric reference frames in cardinal direction judgments.

This research focused on how people coordinate the environmental reference frame of a map with the egocentric reference frame of the forward field of view to make cardinal direction judgments. In 3 studies, reference frame misalignment was found to slow response time for cardinal direction judgments and also markedly decrease accuracy. The studies also showed that people often use a nonrotational, analytic strategy for cardinal direction judgments that has not been identified for other navigational tasks, and that interface aids that improve other navigational tasks seem ineffective for cardinal direction judgments. These findings lead to the recommendation that interface aids for improving cardinal direction judgments should integrate heading information from the environmental reference frame into the egocentric frame (forward view).

Adolescent↗

PubMed1998

Evidence from a partial report task for forgetting in dynamic spatial memory.

G. Sperling (1960) and others have investigated memory for briefly presented stimuli by using a partial versus whole report technique in which participants sometimes reported part of a stimulus array and sometimes reported all of it. For simple, static stimulus displays, the partial report technique showed that participants could recall most of the information in the stimulus array but that this information faded quickly when participants engaged in whole report recall. An experiment was conducted that applied the partial report method to a task involving complex displays of moving objects. In the experiment, 26 participants viewed cars in a low-fidelity driving simulator and then reported the locations of some or all of the cars in each scene. A statistically significant advantage was found for the partial report trials. This finding suggests that detailed spatial location information was forgotten from dynamic spatial memory over the 14 s that it took participants to recall whole report trials. The experiment results suggest better ways of measuring situation awareness. Partial report recall techniques may give a more accurate measure of people's momentary situation awareness than whole report techniques. Potential applications of this research include simulator-based measures of situation awareness ability that can be part of inexpensive test batteries to select people for real-time tasks (e.g., in a driver licensing battery) and to identify people who need additional training.

Adolescent↗