publication . Other literature type . Article . 2011

The effects of local prevalence and explicit expectations on search termination times

Kazuya Ishibashi; Shinichi Kita; Jeremy M. Wolfe;
Open Access English
  • Published: 18 Oct 2011
Abstract
In visual search tasks, the relative proportions of target-present and -absent trials have important effects on behavior. Miss error rates rise as target prevalence decreases (Wolfe, Horowitz, & Kenner, Nature 435, 439–440, 2005). At the same time, search termination times on target-absent trials become shorter (Wolfe & Van Wert, Current Biology 20, 121–124, 2010). These effects must depend on some implicit or explicit knowledge of the current prevalence. What is the nature of that knowledge? In Experiment 1, we conducted visual search tasks at three levels of prevalence (6%, 50%, and 94%) and analyzed performance as a function of “local prevalence,” the prevale...
Subjects
free text keywords: Article, Linguistics and Language, Experimental and Cognitive Psychology, Sensory Systems, Language and Linguistics, Injury prevention, Psychology, Explicit knowledge, Suicide prevention, Mass screening, Visual search, Young adult, Social psychology, Prevalence effect, Human factors and ergonomics
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publication . Other literature type . Article . 2011

The effects of local prevalence and explicit expectations on search termination times

Kazuya Ishibashi; Shinichi Kita; Jeremy M. Wolfe;