Hierarchical task prioritization behavior in two- And four-task scenarios

Guoxi Zhang, Robert Feyen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

This paper describes an empirical study conducted to validate a computational model of dynamic task prioritization based on a framework proposed by Zhang and Feyen (2005). Three key factors in task prioritization were manipulated: processing time, available time, and task valence. Because earlier studies did not investigate how people prioritize tasks when valence and temporal characteristics conflict, this study examined how these conflicts are resolved. 20 subjects completed 54 time-limited task scenarios. Each scenario consisted of two or four concurrent tasks, each assigned a point value for completion. Subjects were instructed to maximize points scored. Results indicated that, although valence was predominant in determining task selection, it failed to explain all instances. Instead, a hierarchy of task prioritization was revealed in which subjects first checked what tasks were doable (e.g., self-efficacy), then applied rules first regarding valence, then temporal characteristics, and then others (e.g., task location).

Original languageEnglish (US)
Title of host publication51st Annual Meeting of the Human Factors and Ergonomics Society, HFES 2007
Pages191-195
Number of pages5
StatePublished - Dec 1 2007
Event51st Annual Meeting of the Human Factors and Ergonomics Society, HFES 2007 - Baltimore, MD, United States
Duration: Oct 1 2007Oct 5 2007

Publication series

NameProceedings of the Human Factors and Ergonomics Society
Volume1
ISSN (Print)1071-1813

Other

Other51st Annual Meeting of the Human Factors and Ergonomics Society, HFES 2007
CountryUnited States
CityBaltimore, MD
Period10/1/0710/5/07

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