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The Number of Trials with Target Affects the Low Prevalence Effect
Yang, F (Yang, Fan); Sun, XH (Sun, Xianghong); Zhang, K (Zhang, Kan); Zhu, BY (Zhu, Biyun)
第一作者Yang, F (Yang, Fan)
2011
会议名称9th International Conference on Engineering Psychology and Cognitive Ergonomics (EPCE) Held as Part of 14th International Conference on Human-Computer Interaction (HCI)
通讯作者邮箱yangf@psych.ac.cn
会议录名称Lecture Notes in Artificial Intelligence
卷号6781
页码126-131
会议日期JUL 09-14, 2011
会议地点Orlando, FL
摘要

Wolfe J M. et al found that subject's miss rate increased markedly when target prevalence decreased in simulated X-ray luggage screening task, which was so-called the low prevalence effect. He thought it was caused by shift of observer's decision criteria. But the number of trials with target (NTT) also affected the effect. The present study had two experiments, and there were two blocks in each experiment. Subjects in Exp 1 were in different NTT (20 vs. 100) but the same target prevalence (both 50%); In Exp 2, NTT was the same (both 20) but the target prevalence was different (50% vs. 5%). The results showed that subject's miss rate was mainly changed with NTT, and decision criteria was up to the target prevalence, Wolfe's conclusion was not completely correct.

关键词X-ray Luggage Screening Low Prevalence Effect Miss Rate Visual Search
语种英语
文献类型会议论文
条目标识符http://ir.psych.ac.cn/handle/311026/26748
专题社会与工程心理学研究室
作者单位Chinese Acad Sci, Inst Psychol, Beijing 100101, Peoples R China.
推荐引用方式
GB/T 7714
Yang, F ,Sun, XH ,Zhang, K ,et al. The Number of Trials with Target Affects the Low Prevalence Effect[C],2011:126-131.
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