Igor Dolgov

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Many critical search tasks, such as airport and medical screening, involve searching for targets that are rarely present. These low-prevalence targets are associated with extremely high miss rates Wolfe, Horowitz, & Kenner (Nature, 435, 439-440, 2005). The inflated miss rates are caused by a criterion shift, likely due to observers attempting to equate the(More)
Across four studies, the current paper demonstrates that smiles are associated with lower social status. Moreover, the association between smiles and lower status appears in the psychology of observers and generalizes across two forms of status: prestige and dominance. In the first study, faces of fashion models representing less prestigious apparel brands(More)
Our ability to detect a target in visual search relates to the prevalence of the target, whereby rare targets are missed more than common targets. The current study sought to identify operator characteristics that could account for the higher miss rates associated with rare targets. The results found that working-memory capacity, which is strongly related(More)
We design and study a mixed reality game, PhotoNav, to investigate wearable computing display modalities. We study game play, varying display modality: head-mounted, handheld, and wrist-worn. PhotoNav requires the player to split attention between the physical world and display by using geotagged photographs as clues for navigation. Our results showed that(More)
We introduce a theory of how game mechanics are signaled through interfaces. Game mechanics may be signaled through player-perceived affordances, player-interpreted signifiers, avatar-perceived affordances, avatar-interpreted signifiers, arbitrary signifiers, or metagame signifiers, and may be obscured with hidden affordances and false signifiers. Each has(More)
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Three theories of the informational basis for object interception strategies were tested in an experiment where participants pursued toy helicopters. Helicopters were used as targets because their unpredictable trajectories have different effects on the optical variables that have been proposed as the basis of object interception, providing a basis for(More)
Certain aspects of a visual search task, such as the location where a target often appears, are learned over time and can serve as a source of attentional guidance. An example ofthis implicit learning, spatial probability cuing speeds detection of targets that appear in probable locations. The current study investigated target feature probability learning(More)