Augmentation Impacts Strategy and Gaze Distribution in a Dual-Task Interleaving Scenario
Augmentation Impacts Strategy and Gaze Distribution in a Dual-Task Interleaving Scenario
复制标题
增强影响双任务交错场景中的策略和注视分布
DOI：
10.1080/10447318.2021.1948250
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
Katharina Rifai
中科院分区：
文献类型：
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作者：
Olga Lukashova;S. Wahl;Katharina Rifai
摘要 当多个任务交错时，人们面临着如何在多个任务之间分配有限时间的决定，这定义了任务交错策略。在一些具有挑战性的任务交错场景中，准确的计时至关重要，人们的表现比他们应有的要差。随着增强现实等技术的不断进步，影响人们的策略并提高他们的绩效成为可能。然而，当用额外的视觉内容增强视觉输入时，增强不仅带来了可能的好处，而且还可以捕获注意力资源。因此，在人们强调其表现的情况下，研究视觉增强如何影响人们的表现非常重要。在当前的研究中，使用心理物理学方法，研究了视觉增强如何影响任务交错策略，从而影响任务重要性不等的双任务环境中的表现。在简单的动态 3D 环境中，生成了四个视觉增强，旨在提示用户何时从一项任务切换到另一项任务更有利。结合注视方向分布来评估任务切换之前一项任务的平均持续时间以及由此产生的总表现。就策略和总体性能而言，与不存在增强时相比，所有增强都显示出优势。此外，与持续存在的视觉增强相比，基于参与者的个人反应时间的突然增强开始对于该策略来说在得分方面更有利。然而，它影响了自然注视方向分布，指示了增强的注意力资源的分配。这项研究的结果提供了对潜在视觉增强设计的深入了解，旨在提高用户在具有挑战性的双任务交错设置中的表现。
ABSTRACT When interleaving multiple tasks, people are confronted with a decision of how to distribute a finite amount of time between several tasks, which defines the task-interleaving strategy. In some challenging task interleaving scenarios where accurate timing is essential, people perform worse than they could have. With the growing advancement of technology, such as augmented reality, it became possible to impact people’s strategy and improve their performance. However, when augmenting visual input with additional visual content, the augmentation not only introduces the possible benefit but can also capture attentional resources. It is, thus, important to investigate how visual augmentation affects people’s performance in cases when otherwise people underscore in their performance. In the current study, using a psychophysics approach, it was investigated how visual augmentation impacts the task-interleaving strategy and, thus, performance in a dual-task setting with unequal task importance. In a simple dynamic 3D environment, four visual augmentations were generated aiming to prompt the user when it is more beneficial score-wise to switch from one task to another. The mean duration on one task before the task switch, as well as the resulting total performance, were evaluated in combination with the gaze direction distribution. In terms of the strategy and the total performance, all augmentations showed an advantage compared to when augmentation was not present. Furthermore, an abrupt augmentation onset based on the individual response time of the participant was more beneficial score-wise for the strategy compared to a constantly present visual augmentation. However, it affected the natural gaze direction distribution indicating the allocation of attentional resources to the augmentation. The results of this study provide an insight into potential visual augmentation designs aiming to improve user’s performance in a challenging dual-task interleaving setting.