Connaboy Christopher, Johnson Caleb D, LaGoy Alice D, Pepping Gert-Jan, Simpson Richard J, Deng Zhigang, Ma Luming, Bower Joanne L, Eagle Shawn R, Flanagan Shawn D, Alfano Candice A
Aerosp Med Hum Perform. 2019 Feb 1;90(2):77-83. doi: 10.3357/AMHP.5190.2019.
The perception-action coupling task (PACT) was designed as a more ecologically valid measure of alertness/reaction times compared to currently used measures by aerospace researchers. The purpose of this study was to assess the reliability, within-subject variability, and systematic bias associated with the PACT. There were 16 subjects (men/women = 9 / 7; age = 27.8 ± 3.6 yr) who completed 4 identical testing sessions. The PACT requires subjects to make judgements on whether a virtual ball could fit into an aperture. For each session, subjects completed nine cycles of the PACT, with each cycle lasting 5 min. Judgement accuracy and reaction time parameters were calculated for each cycle. Systematic bias was assessed with repeated-measures ANOVA, reliability with intraclass correlation coefficients (ICC), and within-subject variability with coefficients of variation (CV). Initiation time (Mean = 0.1065 s) showed the largest systematic bias, requiring the elimination of three cycles to reduce bias, with all other variables requiring, at the most, one. All variables showed acceptable reliability (ICC > 0.70) and within-subject variability (CV < 20%) with only one cycle after elimination of the first three cycles. With a three-cycle familiarization period, the PACT was found to be reliable and stable.
与航空航天研究人员目前使用的测量方法相比，感知 - 行动耦合任务（PACT）被设计为一种在生态学上更有效的警觉性/反应时间测量方法。本研究的目的是评估与PACT相关的可靠性、受试者内变异性和系统偏差。有16名受试者（男性/女性 = 9 / 7；年龄 = 27.8 ± 3.6岁）完成了4次相同的测试环节。PACT要求受试者判断一个虚拟球是否能穿过一个孔径。对于每个环节，受试者完成9个PACT周期，每个周期持续5分钟。计算每个周期的判断准确性和反应时间参数。用重复测量方差分析评估系统偏差，用组内相关系数（ICC）评估可靠性，用变异系数（CV）评估受试者内变异性。启动时间（平均值 = 0.1065秒）显示出最大的系统偏差，需要剔除三个周期以减少偏差，而所有其他变量最多需要剔除一个周期。在剔除前三个周期后，仅一个周期时，所有变量均显示出可接受的可靠性（ICC > 0.70）和受试者内变异性（CV < 20%）。经过三个周期的熟悉期后，发现PACT是可靠且稳定的。
