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Hybrid foraging search: Searching for multiple instances of multiple types of target

机译:混合搜寻:搜索多种目标类型的多个实例

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摘要

This paper introduces the “hybrid foraging” paradigm. In typical visual search tasks, observers search for one instance of one target among distractors. In hybrid search, observers search through visual displays for one instance of any of several types of target held in memory. In foraging search, observers collect multiple instances of a single target type from visual displays. Combining these paradigms, in hybrid foraging tasks observers search visual displays for multiple instances of any of several types of target (as might be the case in searching the kitchen for dinner ingredients or an X-ray for different pathologies). In the present experiment, observers held 8–64 targets objects in memory. They viewed displays of 60–105 randomly moving photographs of objects and used the computer mouse to collect multiple targets before choosing to move to the next display. Rather than selecting at random among available targets, observers tended to collect items in runs of one target type. Reaction time (RT) data indicate searching again for the same item is more efficient than searching for any other targets, held in memory. Observers were trying to maximize collection rate. As a result, and consistent with optimal foraging theory, they tended to leave 25–33% of targets uncollected when moving to the next screen/patch. The pattern of RTs shows that while observers were collecting a target item, they had already begun searching memory and the visual display for additional targets, making the hybrid foraging task a useful way to investigate the interaction of visual and memory search.
机译:本文介绍了“混合觅食”范式。在典型的视觉搜索任务中,观察者在干扰因素中搜索一个目标的一个实例。在混合搜索中,观察者通过视觉显示搜索存储在内存中的几种目标中的任何一种的一个实例。在搜寻搜寻中,观察者从视觉显示中收集单个目标类型的多个实例。结合这些范例,在混合觅食任务中,观察者在视觉显示中搜索几种类型目标中任何一个的多个实例(可能是在厨房里寻找晚餐食材或X射线以寻找不同的病状)。在本实验中,观察者将8–64个目标对象保留在内存中。他们查看了60-105张随机移动的物体照片的显示,并使用计算机鼠标收集了多个目标,然后选择移至下一个显示。观察者倾向于在一种目标类型的运行中收集项目,而不是在可用目标中随机选择。反应时间(RT)数据表明,再次搜索同一项目比搜索保存在内存中的任何其他目标更为有效。观察员试图使收集率最大化。结果,与最佳觅食理论相一致,当移至下一个筛网/补丁时,它们往往使25-33%的目标未被收集。 RT的模式表明,当观察者收集目标物品时,他们已经开始在记忆和视觉显示中搜索其他目标,这使得混合觅食任务成为研究视觉和记忆搜索相互作用的一种有用方法。

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