= Target prevalence effect
Changes in search behavior and misses when targets become more or less frequent. A controlled artificial baggage-search study found more misses at low target prevalence, together with altered absent-decision times. The phenomenon motivates modeling decision criteria and stopping in addition to feature processing; laboratory rates are not automatically professional field rates.<Rare items often missed in visual searches by Jeremy M. Wolfe and others>[Experiment 1 and Figure 2]{ref}
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