减少低流行率效应:相似性搜索是否转化为二元决策?
Greer Gillies1, Anna Kosovicheva2,3
1Department of Psychology, University of Toronto, Toronto, Canada. greer.gillies@mail.utoronto.ca.
Attention, perception & psychophysics
|May 13, 2025
概括
类似性搜索可以减少视觉任务中的低流行率效应 (LPE). 然而,当需要做出二元决策时,LPE仍然存在,即使在自然主义刺激下也是如此.
科学领域:
- 认知心理学 认知心理学
- 视觉感知 视觉感知 视觉感知
- 人类因素 人类因素
背景情况:
- 低流行率效应 (LPE) 是视觉搜索中的一个常见现象,在视觉搜索中,罕见的目标经常被错过.
- 现有的认知干预措施往往无法缓解LPE.
- 类似性搜索在控制环境中消除LPE方面表现有前途.
研究的目的:
- 调查相似性搜索的好处是否延伸到二进制决策任务.
- 为了确定相似性搜索是否可以通过更自然的刺激来减轻LPE.
- 探索在现实场景中应用相似性搜索的局限性.
主要方法:
- 参与者执行了视觉搜索任务,操纵了目标患病率,在近T的分心器中使用T形.
- 测试了两个条件:仅进行相似性搜索,并与二进制决策 (目标存在/缺席) 结合相似性搜索.
- 第二个实验使用了自然主义的道路视频刺激,要求参与者识别危险并做出二进制反应.
主要成果:
- 在某些情况下,相似性搜索部分减弱了LPE.
- 在这两项实验中,对二元决策任务观察到显著的LPE.
- 参与者在将目标分类为在低患病率条件下存在的目标时的准确性较低.
结论:
- 虽然相似性搜索可以减少LPE,但当涉及到二进制决策时,其有效性是有限的.
- 在视觉搜索任务中,LPE仍然是一个挑战,需要对/否判断,即使是自然刺激.
- 在现实环境中应用相似性搜索可能受到二元决策的必要性限制.
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