Response Bias and Response Monitoring: Evidence from Healthy Older Adults and Patients with Mild Alzheimer's Disease

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dc.contributor.authorDeason, Rebecca G.
dc.contributor.authorTat, Michelle J.
dc.contributor.authorFlannery, Sean
dc.contributor.authorMithal, Prabhakar S.
dc.contributor.authorHussey, Erin P.
dc.contributor.authorCrehan, Eileen T.
dc.contributor.authorAlly, Brandon A.
dc.contributor.authorBudson, Andrew E.
dc.date.accessioned2019-10-01T19:27:12Z
dc.date.available2019-10-01T19:27:12Z
dc.date.issued2017-12
dc.description.abstractPatients with Alzheimer's disease (AD) often exhibit an abnormally liberal response bias in recognition memory tests, responding "old" more frequently than "new." Investigations have shown patients can to shift to a more conservative response bias when given instructions. We examined if patients with mild AD could alter their response patterns when the ratio of old items is manipulated without explicit instruction. Healthy older adults and AD patients studied lists of words and then were tested in three old/new ratio conditions (30%, 50%, or 70% old items). A subset of participants provided estimates of how many old and new items they saw in the memory test. We demonstrated that both groups were able to change their response patterns without the aid of explicit instructions. Importantly, AD patients were more likely to estimate seeing greater numbers of old than new items, whereas the reverse was observed for older adults. Elevated estimates of old items in AD patients suggest their liberal response bias may be attributed to their reliance on familiarity. We conclude that the liberal response bias observed in AD patients is attributable to their believing that more of the test items are old and not due to impaired meta-memorial monitoring abilities.
dc.description.departmentPsychology
dc.description.versionThis is the accepted manuscript version of an article published in Brain and Cognition.
dc.formatText
dc.format.extent22 pages
dc.format.medium1 file (.pdf)
dc.identifier.citationDeason, R. G., Tat, M. J., Flannery, S., Mithal, P. S., Hussey, E. P., Crehan, E. T., Budson, A. E. (2017). Response bias and response monitoring: Evidence from healthy older adults and patients with mild Alzheimer’s disease. Brain and Cognition, 119, pp. 17–24.
dc.identifier.doihttps://doi.org/10.1016/j.bandc.2017.09.002
dc.identifier.urihttps://hdl.handle.net/10877/8660
dc.language.isoen
dc.publisherElsevier
dc.sourceBrain and Cognition, 2017, Vol. 119, pp. 17–24.
dc.subjectAlzheimer's disease
dc.subjectresponse bias
dc.subjectmonitoring
dc.subjectrecognition memory
dc.subjectPsychology
dc.titleResponse Bias and Response Monitoring: Evidence from Healthy Older Adults and Patients with Mild Alzheimer's Disease
dc.typeArticle

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