Task Analysis at the Heart of Human-Computer Interaction

Diaper, Dan

doi:10.4018/9781878289919.ch006

Cited by 35 publications

(46 citation statements)

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“…Task analysis [3] usually begins with investigating the users' current problem and breaking down the tasks that potential users of the system do or could do. A task model describes the set of activities required to reach the users' goals and how these activities are related to each other.…”

Section: Task Modelsmentioning

confidence: 99%

Automatic support for usability evaluation

Lecerof

Paternò

1998

IIEEE Trans. Software Eng.

118

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Abstract-The main goal of this work is to propose a method to evaluate user interfaces using task models and logs generated from a user test of an application. The method can be incorporated into an automatic tool which gives the designer information useful to evaluate and improve the user interface. These results include an analysis of the tasks which have been accomplished, those which failed and those never tried, user errors and their type, time-related information, task patterns among the accomplished tasks, and the available tasks from the current state of the user session. This information is also useful to an evaluator checking whether the specified usability goals have been accomplished. Index Terms-User interfaces, usability engineering, formal methods for human-computer interaction, task models, user interface evaluation.

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Section: Task Modelsmentioning

confidence: 99%

Automatic support for usability evaluation

Lecerof

Paternò

1998

IIEEE Trans. Software Eng.

118

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“…One general method is that of hierarchical task analysis (HTA) (Diaper, 1989). This technique includes the concepts of goals, sub-goals, tasks and plans.…”

Section: Task Analysis In Accident Modellingmentioning

confidence: 99%

“…The field of task analysis (Diaper, 1989, Kirwan & Ainsworth, 1992 has many techniques for providing such representations. One general method is that of hierarchical task analysis (HTA) (Diaper, 1989).…”

Section: Task Analysis In Accident Modellingmentioning

confidence: 99%

A formal and structured approach to the use of task analysis in accident modelling

Botting¹,

Johnson²

1998

International Journal of Human-Computer Studies

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“…The literature contains a large number of diverse task analysis methodologies [for a description of different modeling efforts related to task analysis, see Diaper, 1989;Kirwan and Ainsworth, 1992;Olson and Olson, 1990]. We have adopted HTA due to its flexibility and its extensive use in the design and evaluation of computer interactive systems.…”

Section: Hta Modelmentioning

confidence: 99%

A Hierarchical Task Model for Dispatching in Computer-Assisted Demand-Responsive Paratransit Operation

Rahimi

Dessouky

2001

ITS Journal - Intelligent Transportation Systems Journal

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This research was conducted to organize and model a comprehensive paratransit dispatching task activity in a computer-assisted control room. The dispatching task involves continuous monitoring and interaction with archived and real-time data using a dispatch software. Extensive field observations and video recordings of dispatch operations were conducted. Then, an expert dispatcher was used to generate a skeleton decision model of the dispatcher's task performance. Hierarchical Task Analysis (HTA) was used to further refine this model into a comprehensive HTA decision hierarchy (decision tree). To capture the complexity of multi-dispatcher operation, we extended this model to a simultaneous operation of two collaborative dispatchers in the same control room --a van dispatcher and a lead dispatcher. The results of this analysis have shown that HTA can be used to model such an activity with a userdefined degree of fidelity. The sequential decision tree format of the HTA also shows promise as a training tool for entry-level dispatch personnel.

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Task Analysis at the Heart of Human-Computer Interaction

Cited by 35 publications

References 0 publications

Automatic support for usability evaluation

Automatic support for usability evaluation

A formal and structured approach to the use of task analysis in accident modelling

A Hierarchical Task Model for Dispatching in Computer-Assisted Demand-Responsive Paratransit Operation

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