A Search for Understanding. Analysis of Human Performance on Target Acquisition and Search Tasks using Eyetracker Data.

Abstract

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Soldier-in-the-Loop Target Acquisition Performance Prediction Through 2001: Integration of Perceptual and Cognitive Models

“…In addition to Self's observations, other researchers have observed two additional aspects of eye movements that models must be able to address (e.g., Nicoll & Hsu's, 1995 There exists substantial evidence that, as indicated by the observations by Self and Nicoll and Hsu, eye movements are anything but the random-selection-with-replacement phenomenon assumed by the Bailey model.…”

“…Both models from perceptual psychology and most models of target acquisition assume that over-searching does not occur. Given the observations of Self (1969) and Nicoll and Hsu (1995), this assumption is obviously false. That is, there are cases when a target will fall within a prescribed search lobe, will be discarded as a non-target, and will be inspected later and at that time be judged a target.…”

“…Nicoll and colleagues (e.g., Nicoll, 1994;Nicoll & Hsu, 1995;Cartier, Nicoll, & Hsu, 1998) have proposed a different way to model search and detection. The neoclassical framework is based on a different set of assumptions about how an observer actively goes about searching.…”

“…Nicoll and Hsu (1995) used eye tracker data from a NVESD study (O'Kane, Walters, & D'Angostino, 1995) to examine the specific predictions of the memory-less three-stage Markov search model. The predictions of the search portion of the model and the analysis of results are as follow:…”

“…Some sort of featurematching process may be in play. Also, as Nicoll and Hsu (1995) postulated, there could be a motoric delay that slows search while a detection decision is physically rendered (though why that should change the distribution from an exponential is unclear). It could also be that as more information accumulates about the target, the more processing time is required for the addition of information and for evaluations of that information.…”