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The effects of saccadic bilateral eye movements and multi-trial recall

Bibby, David (2010) The effects of saccadic bilateral eye movements and multi-trial recall. Manchester Metropolitan University. (Unpublished)

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Abstract

The effects of saccadic bilateral (horizontal) eye movements and repeated testing on memory concerning eyewitness testimony were investigated. In the study phase, participants were exposed to an event narrative detailing the investigation of a crime scene. This consisted of 45 basic images along with verbal commentary describing the events of the narrative. Next, after a brief 3 minute distraction period, the testing phase began. The testing phase consisted of three recall trials, with participants being exposed to eye movement conditions after trials one and two. In such conditions, participants engaged in 30 seconds of bilateral vs. vertical vs. no eye movements. It was found that repeated testing increased accurate recall overall, whilst no such effects were found for bilateral eye movements. Furthermore, there was no interaction effect between repeated testing and bilateral eye movements. The findings are discussed in terms of potential reasons for why this is the case.

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