Victims as aggressors: Does victim-bystander status influence eyewitness decision-making in showup procedures?

dc.contributor.advisor Max Guyll
dc.contributor.advisor Stephanie Madon
dc.contributor.author Ditchfield, Ryan
dc.contributor.department Psychology
dc.date 2019-08-21T10:23:28.000
dc.date.accessioned 2020-06-30T03:15:09Z
dc.date.available 2020-06-30T03:15:09Z
dc.date.copyright Wed May 01 00:00:00 UTC 2019
dc.date.embargo 2001-01-01
dc.date.issued 2019-01-01
dc.description.abstract <p>Police rely on eyewitness identifications to solve crimes, but eyewitnesses can make mistakes. These mistakes in decision-making can have serious consequences for the criminal justice system. Eyewitnesses can erroneously identify an innocent suspect as the culprit, which could result in a wrongful conviction, or fail to identify a guilty suspect as the culprit, which could result in the culprit avoiding punishment. Drawing on Berkowitz’s (1989) frustration-aggression hypothesis, the current study tested whether eyewitnesses' status as either a victim or a bystander influenced their decision-making processes in a showup procedure after eliminating attention and encoding as possible mediators of the victim-bystander status manipulation. Although victims reported significantly higher feelings of anger than bystanders, victims did not significantly differ from bystanders in identification rates, confidence ratings, response latency, or motivation to catch the guilty culprit. In addition, victims did not significantly differ from bystanders in their ability to distinguish between guilty culprits and innocent suspects. However, analysis of post-identification judgments revealed that victims who made identified innocent suspects reported paying significantly more attention to the culprit, recalling significantly more specific facial features of the culprit, and having a significantly clearer image of the culprit’s face than bystanders. In addition, victims reported being significantly more willing to testify in court regarding their identification decision than bystanders. These findings suggest that victims may increase the potency of their positive identifications by bolstering responses to post-identification judgments. Consequently, victims may give the appearance of having a greater ability to accurately identify guilty culprits than bystanders, even in the absence of true differences.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/etd/17001/
dc.identifier.articleid 8008
dc.identifier.contextkey 14820919
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath etd/17001
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/31184
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/etd/17001/Ditchfield_iastate_0097M_17955.pdf|||Fri Jan 14 21:13:33 UTC 2022
dc.subject.disciplines Law
dc.subject.disciplines Social Psychology
dc.subject.keywords bystander
dc.subject.keywords decision-making
dc.subject.keywords eyewitness
dc.subject.keywords identification
dc.subject.keywords showup
dc.subject.keywords victim
dc.title Victims as aggressors: Does victim-bystander status influence eyewitness decision-making in showup procedures?
dc.type thesis
dc.type.genre thesis
dspace.entity.type Publication
relation.isOrgUnitOfPublication 796236b3-85a0-4cde-b154-31da9e94ed42
thesis.degree.discipline Psychology
thesis.degree.level thesis
thesis.degree.name Master of Science
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