Behavioural implications of alarm mistrust as a function of task workload

被引:115
作者
Bliss, JP [1 ]
Dunn, MC
机构
[1] Univ Alabama, Dept Psychol, Huntsville, AL 35899 USA
[2] So Univ & A&M Coll, Dept Mech Engn, Baton Rouge, LA 70813 USA
关键词
attention; alarm; psychomotor performance; workload; motor skills;
D O I
10.1080/001401300421743
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The research was conducted to investigate the effect of increasing primary task and alarm workload on alarm mistrust as reflected by alarm and primary task performances. A total of 126 undergraduate students performed a complex psychomotor task battery three times, with the number of concurrent tasks increasing each time. During their performance, the students were required to react to an alarm system (including visual and auditory components) of questionable reliability. Depending on the group to which participants were assigned, the alarm presentation rate constituted a low-, medium- or high-workload condition. Alarm response data (times, frequencies, accuracies) and primary task data (tracking error) were analyzed to assess performance differences as a function of primary and secondary task workload levels. Results generally supported the hypotheses: increasing primary task and alarm task workload degraded alarm response performance. Also, response frequencies supported earlier research suggesting that participants 'probability match' their response rates to alarm system reliability. The results are discussed with regard to the cry-wolf effect, attention theory and alarm system design.
引用
收藏
页码:1283 / 1300
页数:18
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