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Optimal Design of Event Lists (ODELs) Phase 2: Does List Length Impact Performance.
| 题名： | Optimal Design of Event Lists (ODELs) Phase 2: Does List Length Impact Performance. |
| 作者： | Ahlstrom, V.; Kudrick, B. |
| 关键词： | Accuracy; Air Traffic Control; Aircraft; Airports; Automation; Electronic Equipment; Event Lists; Information; List Length; List Size; Monitoring; Optimal Design Of Event Lists(odels); Performance; Sa |
| 摘要： | This report documents the second study on the optimal design of event lists (ODELs). This study investigated the impact of event list length on user performance in searching for information. Participants searched for information in each of four different lists, each with a different length: 5 items, 15 items, 25 items, and 35 items. Researchers measured task completion time, accuracy, subjective ratings, and rankings. The shortest list (5 items) led to significantly slower response rates. The slower response rates appear to be due to the time it took users to scroll through the table. Participants made significantly more errors on the longer lists than on the shorter lists. Subjective data mirrored the performance data. Users preferred the mid-size lists (15 items and 25 items) and rated them higher than the longest list (35 items) and shortest list (5 items). Based on the results of this ODELs study, we would recommend a list size of 15 or 25 items over a list size of 5 or 35 items if speed and accuracy are important to the task. Technical Operations (TO) is the part of the Federal Aviation Administration responsible for maintaining the thousands of systems and equipment that allow aircraft to move from one airport to another safely and efficiently. As part of their maintenance tasks, TO Specialists routinely engage in visual searches for information on system events. This information often appears in an electronic table, referred to in the TO environment as an event list. |
| 报告类型： | 科技报告 |
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