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Task analysis

About: Task analysis is a research topic. Over the lifetime, 10432 publications have been published within this topic receiving 283481 citations.


Papers
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Journal ArticleDOI
Alan A. Hartley1
TL;DR: In this paper, the authors explored the possibility of an age-related reduction in the ability to generate and execute two similar motor programs by requiring either a manual response to both tasks or an oral response to the second task.
Abstract: Dual-task differences in younger and older adults were explored by presenting 2 simple tasks, with the onset of the 2nd task relative to the 1st task carefully controlled. The possibility of an age-related reduction in the ability to generate and execute 2 similar motor programs was explored by requiring either a manual response to both tasks or a manual response to the 1st and an oral response to the 2nd and was confirmed by the evidence. The age-related interference was greater than would be expected from a general slowing of processing in older adults. The possibility of an age-related reduction in the capacity to process 2 tasks in the same perceptual input modality was explored by presenting both tasks in the visual modality or the 1st task in the auditory modality and the 2nd task in the visual modality and was not supported by the evidence. There was greater interference when both tasks were in the same modality, but it was equivalent for older and younger adults. Age differences in dual-task interference appear quite localized to response-generation processes.

84 citations

Journal ArticleDOI
TL;DR: In this article, a model predicting relationships among individual, task design, and leader behavior variables was examined for 171 employees of a large manufacturing firm, and the results revealed significa...
Abstract: A model predicting relationships among individual, task design, and leader behavior variables was examined for 171 employees of a large manufacturing firm. Correlational analyses revealed significa...

84 citations

Journal IssueDOI
TL;DR: It is shown that while having awareness of personal actions and history is important for exploratory search tasks spanning multiple sessions, support for group awareness is even more significant for effective collaboration and that support for such group awareness can be provided without compromising usability or introducing additional load on the users.
Abstract: Support for explicit collaboration in information-seeking activities is increasingly recognized as a desideratum for search systems. Several tools have emerged recently that help groups of people with the same information-seeking goals to work together. Many issues for these collaborative information-seeking (CIS) environments remain understudied. The authors identified awareness as one of these issues in CIS, and they presented a user study that involved 42 pairs of participants, who worked in collaboration over 2 sessions with 3 instances of the authors' CIS system for exploratory search. They showed that while having awareness of personal actions and history is important for exploratory search tasks spanning multiple sessions, support for group awareness is even more significant for effective collaboration. In addition, they showed that support for such group awareness can be provided without compromising usability or introducing additional load on the users. © 2010 Wiley Periodicals, Inc.

84 citations

Posted Content
TL;DR: The findings suggest that by improving dialogue quality, taking advantage of two way communication to reduce uncertainty, usingsmaller and less integrated systems and matching system performance to operator needs a job can be created that is likely to improve both operator well-being and effectiveness.
Abstract: Evidence is reviewed that the operating characteristics ofcomputer application systems, in addition to physical characteristicsof display units (CRTs), are the cause of many observed effects onoperator health and task effectiveness. These effects arehypothesized to occur through changes in task structure, and theman-machine redivision of labor that results when computer applicationsystems are introduced into work settings. First, the associationbetween task dimensions and models of operator performanceeffectiveness and well-being are reviewed. Second, application systemdesign parameters that affect task structure are identified. Then,empirical evidence supporting this three part causal linkage -application system parameters to task characteristics to operatoreffectiveness and health - is presented.The findings suggest that by improving dialogue quality, takingadvantage of two way communication to reduce uncertainty, usingsmaller and less integrated systems and matching system performance tooperator needs a job can be created that is likely to improve bothoperator well-being and effectiveness.

83 citations

Book ChapterDOI
05 Sep 2011
TL;DR: This paper explores how microgestures can allow us to execute a secondary task without interrupting the manual primary task, for instance, driving a car, and develops a taxonomy that classifies these gestures according to their task context.
Abstract: This paper explores how microgestures can allow us to execute a secondary task, for example controlling mobile applications, without interrupting the manual primary task, for instance, driving a car. In order to design microgestures iteratively, we interviewed sports- and physiotherapists while asking them to use task related props, such as a steering wheel, a cash card, and a pen for simulating driving a car, an ATM scenario, and a drawing task. The primary objective here is to define microgestures that are easily performable without interrupting or interfering the primary task. Using expert interviews, we developed a taxonomy that classifies these gestures according to their task context. We also assessed the ergonomic and attentional attributes that influence the feasibility and task suitability of microinteractions, and evaluated their level of resources required. Accordingly, we defined 21 microgestures that allow performing microinteractions within a manual, dual task context. Our taxonomy poses a basis for designing microinteraction techniques.

83 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202328
202264
2021665
2020819
2019737
2018834