Keeping an eye on the truth? Pupil size changes associated with recognition memory

Heaver, Becky and Hutton, Sam B (2011) Keeping an eye on the truth? Pupil size changes associated with recognition memory. Memory, 19 (4). pp. 398-405. ISSN 0965-8211

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Abstract

During recognition memory tests participants' pupils dilate more when they view old items compared to novel items. We sought to replicate this "pupil old/new effect" and to determine its relationship to participants' responses. We compared changes in pupil size during recognition when participants were given standard recognition memory instructions, instructions to feign amnesia and instructions to report all items as new. Participants' pupils dilated more to old items compared to new items under all three instruction conditions. This finding suggests that the increase in pupil size that occurs when participants encounter previously studied items is not under conscious control. Given that pupil size can be reliably and simply measured, the pupil old/new effect may have potential in clinical settings as a means for determining whether patients are feigning memory loss.

Item Type: Article
Schools and Departments: School of Psychology > Psychology
Depositing User: Becky Heaver
Date Deposited: 20 Feb 2012 16:55
Last Modified: 10 Jul 2013 13:56
URI: http://sro.sussex.ac.uk/id/eprint/37127
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