Target Times data from Experiment 1b in the manuscript "The Importance of Search Strategy for Finding Targets in Open Terrain"

Target Times data from Experiment 1b in the manuscript "The Importance of Search Strategy for Finding Targets in Open Terrain".<br>Abstract:<br>A number of real world search tasks (i.e., police search, IED detection,) require searchers to search exhaustively across open ground. In the present study, we simulated this problem by asking individuals (Experiments 1a and 1b) and dyads (Experiment 2) to search for coin targets pseudo-randomly located in a bounded area of open grassland terrain. In Experiment 1a, accuracy, search time and the route used to search an area were measured. Participants tended to use an ‘S’ shaped pattern with a common width of search lane. Increased accuracy was associated with slower, but also variable, search speed, though only when participants moved along the length (as opposed to across the width) of the search area. Experiment 1b ,varied the number of targets available within the bounded search area and in doing so varied target prevalence and density. The results confirmed that the route taken in Experiment 1a generalizes across variations in target prevalence/density. In Experiment 2, accuracy, search time, and the search strategy used by dyads was measured. While dyads were more accurate than individuals, dyads that opted to conduct two independent searches were more accurate than those who opted to split the search space. The implications of these results for individuals and pairs when searching for targets in open space are discussed.

本数据集为论文《开放地形中目标搜寻策略的重要性》（"The Importance of Search Strategy for Finding Targets in Open Terrain"）中实验1b的目标搜寻时长数据。
摘要：
现实场景中诸多搜寻任务（如警用巡逻搜寻、简易爆炸装置（IED，Improvised Explosive Device）排查）均要求搜寻人员对开阔地面开展全覆盖式搜寻。本研究通过两类场景模拟该问题：其一，要求单人受试者（实验1a与1b）、其二，双人搭档（实验2）在划定的开阔草地范围内，搜寻伪随机分布的硬币类目标。实验1a中，我们记录了搜寻准确率、搜寻时长以及所采用的搜寻路线。受试者普遍采用具有统一搜索带宽度的"S"形搜寻模式。研究发现，更高的搜寻准确率与更慢但存在波动的搜寻速度相关，且该关联仅当受试者沿搜索区域的纵向（而非横向）移动时成立。实验1b则通过调整划定搜索区域内的目标数量，改变了目标出现率与目标密度。结果证实，实验1a中采用的搜寻路线可推广至不同目标出现率/密度的场景。实验2中，我们记录了双人搭档的搜寻准确率、搜寻时长以及所采用的搜寻策略。相较于单人受试者，双人搭档的搜寻准确率更高；其中，选择各自独立开展搜寻的搭档，其搜寻准确率又高于选择拆分搜索区域的搭档。本文最后讨论了上述结果对单人及双人开展开阔空间目标搜寻任务的启示。