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Age-Related Changes in Information Processing on Tasks of Perceptual Speed

Title: Age-Related Changes in Information Processing on Tasks of Perceptual Speed.
Name(s): Roring, Roy W., author
Charness, Neil, professor directing thesis
Ericsson, K. Anders, committee member
Maner, Jon, committee member
Department of Psychology, degree granting department
Florida State University, degree granting institution
Type of Resource: text
Genre: Text
Issuance: monographic
Date Issued: 2005
Publisher: Florida State University
Florida State University
Place of Publication: Tallahassee, Florida
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: The general slowing theory of cognitive aging claims that age-related decline in cognitive performance results from the global slowing of processing functions. This theory derives from evidence showing how tests of perceptual speed account for virtually all the age-related variance in many tasks. However, these tasks may reflect more than individual differences in general speediness, such as different strategies resulting from the different possible ways of understanding the task, differential memory abilities, or a speed-accuracy trade-off. Using verbal protocol analysis and eye tracking, different models for common tests of perceptual speed were evaluated. Participants completed the number comparison, digit-symbol, and backward digit span tasks in either a "think-aloud" or a silent control condition. In both conditions, participants' eye movements were recorded for number comparison and digit-symbol, and each participant was given one of three types of instructions for these two tests, one focusing the participant on speed, accuracy, or both. Overall, results show that the number of fixations during encoding potentially mediates age-related decline on these tasks, whereas other variables, such as fixation duration and switches between interest regions, did not correlate with age. The results have implications for theories of aging, as only one model, based on encoding delay, fully accounted for the observed results.
Identifier: FSU_migr_etd-1774 (IID)
Submitted Note: A Thesis Submitted to the Department of Psychology in Partial Fulfillment of the Requirements for the Degree of Master of Science.
Degree Awarded: Fall Semester, 2005.
Date of Defense: November 4, 2005.
Keywords: Aging, Perceptual Speed, Eye Tracking, Verbal Reports
Bibliography Note: Includes bibliographical references.
Advisory committee: Neil Charness, Professor Directing Thesis; K. Anders Ericsson, Committee Member; Jon Maner, Committee Member.
Subject(s): Psychology
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Host Institution: FSU

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Roring, R. W. (2005). Age-Related Changes in Information Processing on Tasks of Perceptual Speed. Retrieved from