Target Time data from the 5 Target Condition in Experiment 1b in the manuscript "The Importance of Search Strategy for Finding Targets in Open Terrain".

Target Time data from the 5 Target Condition in Experiment 1b in the manuscript "The Importance of Search Strategy for Finding Targets in Open Terrain".<br><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.

本数据集取自论文《The Importance of Search Strategy for Finding Targets in Open Terrain》（《开阔地形中目标搜寻策略的重要性》）中实验1b的5种目标条件下的目标时间数据。

摘要：
诸多现实搜寻任务（如警务搜查、简易爆炸装置（Improvised Explosive Device, IED）排查等）均要求搜寻者对开阔地面开展穷尽式搜寻。本研究通过招募个体参与者（实验1a与实验1b）与双人搭档（实验2），令其搜寻伪随机布置于开阔草地有界区域内的硬币形目标，以此模拟该类搜寻场景。
在实验1a中，我们对搜寻准确率、搜寻时长与区域搜寻路线进行了测量。结果显示，参与者普遍采用具有统一搜索带宽度的“S”形搜寻路线。搜寻准确率的提升与更缓慢但更具波动性的搜寻速度相关，但该关联仅在参与者沿搜寻区域的长度方向（而非宽度方向）移动时成立。
实验1b通过调整有界搜寻区域内的目标数量，改变了目标出现率与目标密度。实验结果证实，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。
在实验2中，我们测量了双人搭档的搜寻准确率、搜寻时长与搜寻策略。尽管双人搭档的搜寻准确率高于个体参与者，但选择独立开展两次搜寻的双人搭档，其准确率要高于选择拆分搜寻区域的双人搭档。
本研究最后讨论了上述结果对开阔空间内单人与双人目标搜寻任务的启示。