本文研究NASA-TLX(National Aeronautics and Space Administration-Task Load Index,美国国家宇航局任务负荷指数)量表对VTS(Vienna Psychological Test System)测试产生的主观疲劳感进行评估的有效性和适用性。实验选取上海地铁驾驶...本文研究NASA-TLX(National Aeronautics and Space Administration-Task Load Index,美国国家宇航局任务负荷指数)量表对VTS(Vienna Psychological Test System)测试产生的主观疲劳感进行评估的有效性和适用性。实验选取上海地铁驾驶员样本完成VTS测试模块,数据分析结果表明:(1)用NASA-TLX量表作为测量手段来评估VTS测试任务产生的心理负荷,结果表现出良好的信度和效度水平;(2)NASA-TLX量表的心理和体力需求维度与VTS测试中反应力和注意力绩效之间表现出显著相关性,证明量表具有的可靠准则关联效度,并可以一定程度上定性地对绩效表现做出预测判断。本文研究结果可为NASA-TLX量表的多样化应用和驾驶疲劳研究提供参考。展开更多
Noise is one of the environmental factors with mental and physical effects.The workload is also the multiple mental and physical demands of the task.Therefore,his study investigated the relationship between noise expo...Noise is one of the environmental factors with mental and physical effects.The workload is also the multiple mental and physical demands of the task.Therefore,his study investigated the relationship between noise exposure and mood states at different levels of workload.The study recruited 50 workers from the manufacturing sector(blue-collar workers)as the exposed group and 50 workers from the office sector(white-collar workers)as the control group.Their occupational noise exposure was measured by dosimetry.The Stress-Arousal Checklist(SACL)and the NASA Task Load Index(NASA-TLX)were used to measure mood and workload,respectively.The equivalent noise exposure level of the exposed group at high and very high workload levels was 85 and 87 dBA,respectively.The mean mood score of the exposed group was 76 at very high workload.The correlation coefficient between noise exposure level and mood state based on workload levels ranged from 0.3 at medium workload to 0.57 at very high workload.Noise exposure at high workload levels can increase its adverse effects,so controlling and optimizing the multiple demands of the task in the workplace can be used as a privative measure to reduce the adverse effects of noise.展开更多
文摘本文研究NASA-TLX(National Aeronautics and Space Administration-Task Load Index,美国国家宇航局任务负荷指数)量表对VTS(Vienna Psychological Test System)测试产生的主观疲劳感进行评估的有效性和适用性。实验选取上海地铁驾驶员样本完成VTS测试模块,数据分析结果表明:(1)用NASA-TLX量表作为测量手段来评估VTS测试任务产生的心理负荷,结果表现出良好的信度和效度水平;(2)NASA-TLX量表的心理和体力需求维度与VTS测试中反应力和注意力绩效之间表现出显著相关性,证明量表具有的可靠准则关联效度,并可以一定程度上定性地对绩效表现做出预测判断。本文研究结果可为NASA-TLX量表的多样化应用和驾驶疲劳研究提供参考。
文摘Noise is one of the environmental factors with mental and physical effects.The workload is also the multiple mental and physical demands of the task.Therefore,his study investigated the relationship between noise exposure and mood states at different levels of workload.The study recruited 50 workers from the manufacturing sector(blue-collar workers)as the exposed group and 50 workers from the office sector(white-collar workers)as the control group.Their occupational noise exposure was measured by dosimetry.The Stress-Arousal Checklist(SACL)and the NASA Task Load Index(NASA-TLX)were used to measure mood and workload,respectively.The equivalent noise exposure level of the exposed group at high and very high workload levels was 85 and 87 dBA,respectively.The mean mood score of the exposed group was 76 at very high workload.The correlation coefficient between noise exposure level and mood state based on workload levels ranged from 0.3 at medium workload to 0.57 at very high workload.Noise exposure at high workload levels can increase its adverse effects,so controlling and optimizing the multiple demands of the task in the workplace can be used as a privative measure to reduce the adverse effects of noise.
