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Glavan Thesis 5_29_17.pdf (4.19 MB)

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Exploring the Time-Based Resource-Sharing Model of Working Memory Through Computational Modeling

Glavan, Joseph
http://orcid.org/0000-0002-7664-2398
http://rave.ohiolink.edu/etdc/view?acc_num=wright149609967802364

Abstract Details

2017, Master of Science (MS), Wright State University, Human Factors and Industrial/Organizational Psychology MS.
Working memory is the fundamental component of cognition that allows us to temporarily maintain information needed for concurrent processing. An existing theory from the literature, the time-based resource-sharing (TBRS) model, posits that working memory is a serial, rapidly switching, attentional refreshing mechanism. While others have sought previously to formalize the TBRS model into a computational process model, I go further, using ACT-R to model the influence of working memory on an entire task from end to end. I leverage ACT-R's existing base-level learning mechanism, typically used to model recency and frequency effects in long-term memory, to enact the attentional refreshing and temporal decay central to TBRS. I also use a novel combination of existing inhibition and association theories to implement a functional list representation. The model replicates trends in human memory spans and response times across six experimental conditions from a previously published study. These efforts reveal that areas not traditionally associated with working memory research directly, particularly item representation and response strategy, are necessary assumptions of any such process model despite being underspecified in TBRS and other theories. I discuss future experiments to further constrain these ancillary assumptions and conclude by proposing various directions for expanding the model in subsequent work.
Joseph Houpt, Ph.D. (Advisor)
Ion Juvina, Ph.D. (Committee Member)
Christopher Myers, Ph.D. (Committee Member)
151 p.
Cognitive Psychology
working memory; ACT-R; time-based resource-sharing; TBRS; computational modeling; temporal context; cognitive inhibition

Recommended Citations

Citations

  • Glavan, J. (2017). Exploring the Time-Based Resource-Sharing Model of Working Memory Through Computational Modeling [Master's thesis, Wright State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=wright149609967802364

    APA Style (7th edition)

  • Glavan, Joseph. Exploring the Time-Based Resource-Sharing Model of Working Memory Through Computational Modeling. 2017. Wright State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=wright149609967802364.

    MLA Style (8th edition)

  • Glavan, Joseph. "Exploring the Time-Based Resource-Sharing Model of Working Memory Through Computational Modeling." Master's thesis, Wright State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=wright149609967802364

    Chicago Manual of Style (17th edition)

wright149609967802364
1,033
© 2017, all rights reserved.
This open access ETD is published by Wright State University and OhioLINK.