Centre for Sleep Research, P7-35 Playford Building, City East Campus, University of South Australia, Frome Road, Adelaide SA 5000, Australia.
Appleton Institute, Central Queensland University, 44 Greenhill Road, Wayville SA 5034, Australia.
Appl Ergon. 2018 Apr;68:273-282. doi: 10.1016/j.apergo.2017.12.006. Epub 2017 Dec 17.
Situation awareness (SA) is an important component of an individual's ability to function in a complex environment. As such, it is essential to have effective measures of an individual's SA. The most widely used subjective measure of SA is the Situation Awareness Rating Technique [SART]. However, SART has been criticised for not predicting performance or objective SA, and being highly correlated with workload. This paper describes the development and testing of a new subjective measure of SA, the Low-Event Task Subjective Situation Awareness (LETSSA) measure. To evaluate LETSSA a train simulator study was conducted with 23 novice and 26 expert freight train drivers. LETSSA was able to detect differences in manipulated SA and was comparable to an established objective SA measure (SAGAT). LETSSA was significantly associated with performance but not significantly associated with workload. While further validation is required, LETSSA shows promise as an effective subjective measure of SA.
情境意识 (SA) 是个体在复杂环境中运作能力的重要组成部分。因此，拥有有效衡量个体情境意识的方法至关重要。目前最广泛使用的主观 SA 衡量方法是情境意识评估技术 [SART]。然而，SART 因其无法预测表现或客观 SA，以及与工作量高度相关而受到批评。本文描述了一种新的主观 SA 衡量方法——低事件任务主观情境意识 (LETSSA) 衡量方法的开发和测试。为了评估 LETSSA，进行了一项包含 23 名新手和 26 名专家货运列车司机的火车模拟器研究。LETSSA 能够检测到操纵 SA 的差异，并且与既定的客观 SA 衡量方法 (SAGAT) 相当。LETSSA 与性能显著相关，但与工作量不显著相关。虽然还需要进一步验证，但 LETSSA 作为一种有效的主观 SA 衡量方法具有很大的发展潜力。
