NDLI: Exploring the effects of group size and display configuration on visual search

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Exploring the effects of group size and display configuration on visual search

Content Provider	ACM Digital Library
Author	Balakrishnan, Ravin Forlines, Clifton Wigdor, Daniel Shen, Chia
Abstract	Visual search is the subject of countless psychology studies in which people search for target items within a scene. The bulk of this literature focuses on the individual with the goal of understanding the human perceptual system. In life, visual search is performed not only by individuals, but also by groups -- a team of doctors may study an x-ray and a team of analysts may study a satellite photograph. In this paper, we examine the issues one should consider when searching as a group. We present the details of an experiment designed to investigate the impact of group size on visual search performance, and how different display configurations affected that performance. We asked individuals, pairs, and groups of four people to participate in a baggage screening task in which these teams searched simulated x-rays for prohibited items. Teams conducted these searches on single monitors, a row of four monitors, and on a single horizontal display. Our findings suggest that groups commit far fewer errors in visual search tasks, although they may perform slower than individuals under certain conditions. The interaction between group size and display configuration turned out to be an important factor as well.
Starting Page	11
Ending Page	20
Page Count	10
File Format	PDF
ISBN	1595932496
DOI	10.1145/1180875.1180878
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2006-11-04
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Horizontal display Visual search Group size Shared-display groupware Multi-monitor interfaces
Content Type	Text
Resource Type	Article

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