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首页> 外文学位 >The effects of message length, L2 proficiency and cognitive workload on performance accuracy and speech production in a simulated pilot navigation task.
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The effects of message length, L2 proficiency and cognitive workload on performance accuracy and speech production in a simulated pilot navigation task.

机译：在模拟飞行员导航任务中，消息长度，L2水平和认知工作量对性能准确性和语音产生的影响。

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摘要

The goal of the present study was to investigate the influence of L2 proficiency in controller-pilot communications under conditions of varying cognitive workload. The study therefore examined the effects of L2 proficiency and cognitive workload on performance accuracy and speech production in a simulated pilot navigation task. Three groups of 20 participants (one native-English speaking and two native-Mandarin speaking of relatively high and low levels of proficiency in English) took part in the experiment. Participants listened to, repeated and responded to "controller" messages (in English) of varying lengths in two conditions: clear and workload. In the workload condition, participants performed a concurrent arithmetic task while repeating the controller message.; The dependent variables were divided into two sets: performance accuracy (message repetition and navigation accuracy), and speech production (accentedness, comprehensibility, fluency and confidence, as perceived by 10 native-English speaking raters). Based on the results of the present study, it is recommended that air traffic controllers limit their messages to a length of 2 commands when communicating with L1 pilots under high workload conditions. When communicating with L2 pilots of low or intermediate L2 proficiency, it is recommended that controllers limit the length of their messages to 1 command under high cognitive workload conditions. A significant detriment to speech production due to increased message length was observed for the L2 groups for all speech production measures. A significant detriment to speech production due to increased cognitive workload was observed for the Low L2-proficiency group for the perceived fluency measure.
机译：本研究的目的是调查认知能力不同的情况下，L2熟练程度对控制器-驾驶员通信的影响。因此，该研究在模拟飞行员导航任务中检查了L2水平和认知工作量对性能准确性和语音产生的影响。三组20名参与者（一个讲英语的母语和两个讲普通话的英语水平相对较高和较低的普通话）参加了该实验。参与者在两种情况下收听，重复并回复了长度不等的“控制器”消息（英语）：清晰和工作量。在工作负载条件下，参与者在重复控制器消息的同时执行并发算术任务。因变量分为两组：性能准确度（消息重复和导航准确度）和语音产生（重音，可理解性，流利度和置信度，被10个以英语为母语的评估者认为）。根据当前研究的结果，建议在高工作负荷条件下与L1飞行员进行通信时，空中交通管制员将其信息的长度限制为2个命令。与低或中级L2能力的L2飞行员进行通信时，建议控制器在认知工作量较高的情况下将其消息长度限制为1个命令。对于所有语音生成措施，对于L2组，由于增加了消息长度，导致语音生成受到严重损害。对于L2熟练程度较低的人群，由于其感知的工作量增加，导致认知工作量增加，这对语音产生产生了重大不利影响。

著录项

  • 作者

    Farris, Candace.;

  • 作者单位

    Concordia University (Canada).;

  • 授予单位 Concordia University (Canada).;
  • 学科 Speech Communication.; Psychology Industrial.; Education Vocational.
  • 学位 M.A.
  • 年度 2007
  • 页码 155 p.
  • 总页数 155
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 语言学;工业心理学;职业技术教育;
  • 关键词

  • 入库时间 2022-08-17 11:39:16

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