Date of Award

Spring 5-2018

Degree Type

Honors College Thesis


Criminal Justice

First Advisor

Alan Thompson

Second Advisor

Mark Huff

Advisor Department

Criminal Justice; Psychology


Eyewitness accuracy is of vital importance in crime scene investigations; however, accumulating evidence suggests that eyewitnesses often show memory inaccuracies. One type of eyewitness inaccuracy is the weapons-focused effect which occurs when the presence of a weapon as part of a crime scene compromises an individual’s ability to recall other details about the event or scene (Erickson, Lampinen & Leding, 2014). Given the weapons-focused effect negatively affects eyewitness accuracy, the purpose of my thesis is to examine the extent to which the weapons-focused effect is moderated by certain personality traits. Of particular interest were the neuroticism and conscientiousness factors in the Big 5 Personality Inventory (Costa & McCrae, 1992) and the Need for Cognition scale (Cacioppo, Petty, & Kao, 1984). To accomplish this objective, participants viewed a set of static images depicting various crime scenes, some of which included weapons, followed by a recognition memory test for the scenes and the personality inventories. To preview, correlational analyses revealed no significant relationships between the weapons-focused effect and the personality traits of interest, though a significant relationship was found between conscientiousness and overall memory for the scenes. Thus, the weapons-focused effect may occur more broadly, across different personality types.