无论你做什么,旅行就是在视觉食中旅行
Injae Hong1, Grace Yan2, Jeremy M Wolfe1
1Visual Attention Lab, Brigham and Women's Hospital, USA; Harvard Medical School, USA.
Vision research
|September 28, 2024
概括
在视觉食中旅行时添加次要任务在参与者离开耗尽的补丁时没有改变. 离开补丁的决定有时会受到旅行时间的影响,但不会受到次要任务本身的影响.
科学领域:
- 行为生态学 行为生态学
- 认知心理学 认知心理学
- 决策科学 决策科学 决策科学
背景情况:
- 视觉食涉及从补丁中收集物品,需要决定何时离开耗尽的补丁以尽量减少旅行成本.
- 边际价值定理 (MVT) 预测了基于考虑到旅行时间的最大化收集率的最佳补丁离开决策.
- 旅行期间并发任务对食决策的影响仍未得到充分研究.
研究的目的:
- 为了调查在旅行期间执行次要任务是否会影响视觉食中的补丁离开行为.
- 确定旅行时间或次要任务的性质是否会影响食决策.
- 为了比较观察到的补丁离开行为与边际价值定理 (MVT) 的预测.
主要方法:
- 参与者在10分钟或30分钟的时间内进行模拟视觉食任务.
- 在模拟的"果地块"之间旅行,要么执行次要任务,要么被动观察.
- 在实验条件下操纵了旅行时间.
主要成果:
- 在旅行期间执行次要任务并没有显著改变离开补丁的决定.
- 在最初的实验中,补丁离开的决定与MVP关于旅行时间的预测保持一致.
- 在后来的一项实验中,参与者过度收获,偏离了MVT预测,提出了替代的决策规则.
结论:
- 在旅行期间同时执行的次要任务不会影响视觉食中的补丁离开决策.
- 食行为可能会偏离MVT预测,特别是当参与者采用不同的决策策略时.
- 旅行本身的性质,独立于任务需求,并没有影响跨实验的补丁离开决定.
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