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The effect of time pressure and task difficulty on human search

  • Beihang University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In order to study the effect of time pressure and task difficulty on human search performance, an experimental study was conducted. Thirteen people participated in the experiment. The time pressure is changed by changing the presentation time of the target information on the display. The task difficulty is changed by changing the number of the target information displayed on the computer display. Subjects’ reaction time (RT), accuracy rate and eye movement data were recorded during the experiment. The results show that the subjects’ reaction time decrease and accuracy rate increase. The subjects’ reaction time increased and accuracy rate decreased when the task difficulty increase. Eye movement data also changed with the change of time pressure and task difficulty. When time pressure increased, the pupil diameter increased, number of fixation points decreased, fixation frequency increased and average fixation time decreased. Pupil diameter increased when task difficulty increase. So the conclusion could be made that eye movement behavior and search performance change with the change of task difficulty and time pressure. During Human-machine Interface Design, the task difficulty and time pressure need to be scientifically designed to optimize the performance of the operator.

Original languageEnglish
Title of host publicationEngineering Psychology and Cognitive Ergonomics. Mental Workload, Human Physiology, and Human Energy - 17th International Conference, EPCE 2020, Held as Part of the 22nd HCI International Conference, HCII 2020, Proceedings
EditorsDon Harris, Wen-Chin Li
PublisherSpringer
Pages111-124
Number of pages14
ISBN (Print)9783030490430
DOIs
StatePublished - 2020
Event17th International Conference on Engineering Psychology and Cognitive Ergonomics, EPCE 2020, held as part of the 22nd International Conference on Human-Computer Interaction, HCII 2020 - Copenhagen, Denmark
Duration: 19 Jul 202024 Jul 2020

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume12186 LNAI
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference17th International Conference on Engineering Psychology and Cognitive Ergonomics, EPCE 2020, held as part of the 22nd International Conference on Human-Computer Interaction, HCII 2020
Country/TerritoryDenmark
CityCopenhagen
Period19/07/2024/07/20

Keywords

  • Eye movement
  • Performance
  • Task difficulty
  • Time pressure
  • Visual search

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