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The effects of image set size and time pressure on human performance and mental workload in a cyber image search task
Zhao, Guozhen1; Wu, Changxu2
2013
会议名称57th Human Factors and Ergonomics Society Annual Meeting - 2013, HFES 2013
会议日期September 30, 2013 - October 4, 2013
会议地点San Diego, CA, United states
出版者Human Factors an Ergonomics Society Inc., Box 1369, Santa Monica, CA 90406-1369, United States
摘要

Visual image search on the web is a common behavior that provides people immediate access to the world of published graphical information and the power to search for a desired image. Previous research in the visual search literature primarily focused on the visual search performance (search speed and accuracy), and few studies paid attention to the investment of mental resources in a visual search task. In this study, 40 participants were recruited to perform an image search task. Image set size and time pressure served as two within-subject variables. Performance was evaluated in terms of image search reaction time (RT), the slope of RT × set size function, and search accuracy. Mental workload was assessed based on four physiological indices (heart rate, the power in the 0.1 Hz component of heart rate variability, respiration, and endogenous eye blink) and subjective ratings. The current study found that, regardless of the manipulation of time pressure, the average image search reaction time decreased as the set size increased, producing shallow slopes of the RT × set size functions. There was a positive relationship between task difficulty and mental workload. Higher mental workload was observed when people performed an image search task under time pressure. Moreover, the power in the 0.1 Hz component of heart rate variability was more sensitive to measures relatively low or moderate changes in mental workload. Copyright 2013 by Human Factors and Ergonomics Society, Inc.

关键词Endogenous eye blinks Graphical information Heart rate variability Human performance Mental workload Physiological indices Search accuracy Subjective rating
学科领域Human Engineering
DOI10.1177/1541931213571461
收录类别EI
语种英语
引用统计
文献类型会议论文
条目标识符http://ir.psych.ac.cn/handle/311026/21493
专题社会与工程心理学研究室
作者单位1.Institute of Psychology, Chinese Academy of Sciences, China
2.Department of Industrial and Systems Engineering, State University of New York (SUNY), Buffalo, United States
推荐引用方式
GB/T 7714
Zhao, Guozhen,Wu, Changxu. The effects of image set size and time pressure on human performance and mental workload in a cyber image search task[C]:Human Factors an Ergonomics Society Inc., Box 1369, Santa Monica, CA 90406-1369, United States,2013.
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