Author Type

Graduate Student

Date of Award

Fall 11-12-2025

Document Type

Dissertation

Publication Status

Version of Record

Submission Date

November 2025

Department

Psychology

Degree Name

Doctor of Philosophy (PhD)

Thesis/Dissertation Advisor [Chair]

Alan Kersten

Abstract

Decades of eye-tracking and memory research support the weapon focus effect, that weapons attract visual attention during criminal events which leaves less attention to focus on other event features. Relevant memory tests, however, typically only evaluate recognition of the perpetrator committing a crime. Rarely, if at all, do researchers use direct tests of memory for the weapons. Therefore, it is less understood if viewers are simply attending to objects or if they are encoding their details. In the present studies, we successfully replicated the attentional weapon focus effect with newly filmed stimuli of criminal and neutral events. The second experiment evaluated feature and associative memory for weapons, their actions, and actors. Results display increased recognition for weapons compared to neutral objects; however, this finding might be explained by differences in the objects’ visual similarity. We then tested participants’ memory for weapons and actors using object and person lineups. Results demonstrated worsened accuracy for weapons compared to neutral objects, indicating that participants struggle to discern between the weapon they saw and others that match the same general description but differ in fine-grain details. Therefore, participants may not be encoding the specific details of a weapon when it is present but may be categorizing the object as life-threatening.

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