Cognitive Modeling of Task Switching in Discretionary Multitasking Based on the ACT-R Cognitive Architecture
- Authors
- Oh, Hyungseok; Yun, Yongdeok; Myung, Rohae
- Issue Date
- 5월-2021
- Publisher
- MDPI
- Keywords
- task switching; cognitive model; ACT-R; cognitive architecture; discretionary multitasking
- Citation
- APPLIED SCIENCES-BASEL, v.11, no.9
- Indexed
- SCIE
SCOPUS
- Journal Title
- APPLIED SCIENCES-BASEL
- Volume
- 11
- Number
- 9
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/128089
- DOI
- 10.3390/app11093967
- ISSN
- 2076-3417
- Abstract
- Discretionary multitasking has emerged as a prevalent and important domain in research on human-computer interaction. Studies on modeling based on cognitive architectures such as ACT-R to gain insight into and predict human behavior in multitasking are critically important. However, studies on ACT-R modeling have mainly focused on concurrent and sequential multitasking, including scheduled task switching. Therefore, in this study, an ACT-R cognitive model of task switching in discretionary multitasking was developed to provide an integrated account of when and how humans decide on switching tasks. Our model contains a symbolic structure and subsymbolic equations that represent the cognitive process of task switching as self-interruption by the imposed demands and a decision to switch. To validate our model, it was applied to an illustrative dual task, including a memory game and a subitizing task, and the results were compared with human data. The results demonstrate that our model can provide a relatively accurate representation, in terms of task-switching percent just after the subtask, the number of task-switching during the subtask, and performance time depending on the task difficulty level; it exhibits enhanced performance in predicting human behavior in multitasking and demonstrates how ACT-R facilitates accounts of voluntary task switching.
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Collections - College of Engineering > School of Industrial and Management Engineering > 1. Journal Articles
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