Accession Number:

ADA582615

Title:

Second Search Same as the First: The Benefit of Consistency in Multiple Target Search

Descriptive Note:

Abstract

Corporate Author:

DUKE UNIV DURHAM NC

Personal Author(s):

Report Date:

2012-08-15

Pagination or Media Count:

6.0

Abstract:

Real world visual search is a complicated process subject to a variety of unavoidable pressures e.g., time limits. As such, increasing accuracy in critical searches e.g., baggage screening cannot always be done by improving the situation, and so improvement must come from the searcher. Here we demonstrate that consistency in time of search completion can predict accuracy in multiple-target search for professional TSA Officers and non-professional searchers. Participants were more likely to miss a second target after finding a first, but increased consistency reduced this likelihood and increased overall accuracy. Nicely, consistency offers a trainable mechanism to improve performance. Visual search experiments in the lab often require participants to find a single, welldefined target among distractors. However, real world search tasks are not always so clear-cut. For example, radiologists do not know what kind or how many abnormalities might be present, and airport baggage screeners do not know if a given bag contains water bottles, explosives, andor other prohibited items. A key complexity to such searches is that they can contain more than one target during any given search, and such multiple target searches introduce unique problems. In particular, decades of research has demonstrated that when multiple targets are present, locating one can interfere with accuracy for locating additional targets a phenomenon known as satisfaction of search SOS Tuddenham, 1962

Subject Categories:

  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE