Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
Does the Post-Identification Feedback Effect Persist in Eyewitnesses Viewing Multiple Perpetrator Line-ups?
Eyewitness testimonies are integral pieces of evidence in criminal justice investigations. This is because justified conviction and appropriate sentencing can flow from eyewitness testimony. However, research has demonstrated that eyewitness testimony is often unreliable, even more so, the testimony...
Saved in:
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | Eng |
| Published: |
Department of Psychology
2024
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867614160818274304 |
|---|---|
| access_status_str | Open Access |
| author | Methola, Bokang |
| author2 | Tredoux, Colin |
| author_browse | Methola, Bokang Tredoux, Colin |
| author_facet | Tredoux, Colin Methola, Bokang |
| author_sort | Methola, Bokang |
| collection | Thesis |
| description | Eyewitness testimonies are integral pieces of evidence in criminal justice investigations. This is because justified conviction and appropriate sentencing can flow from eyewitness testimony. However, research has demonstrated that eyewitness testimony is often unreliable, even more so, the testimony of eyewitnesses who have witnessed multiple perpetrator crimes. This is because eyewitnesses to multiple perpetrator crimes have the challenging tasks of recalling the crime scene, correctly identifying the perpetrators involved in the crime, and assigning the correct role to each perpetrator. Eyewitnesses in the current study viewed a mock crime video comprising one, two, or five perpetrators and were instructed to answer a number of crime-related questions and identify the perpetrator/s from the line-up. The line-ups were presented sequentially (with one perpetrator in each line-up) for eyewitnesses who viewed the multiple perpetrator crimes. Additionally, these eyewitnesses were required to pair each perpetrator to the role they played in the crime. Analysis of the sample (N = 226) revealed that the accuracy of eyewitnesses decreased as the number of perpetrators increased. The ‘post-identification feedback' effect has not yet been studied in multiple perpetrator crimes. Single perpetrator research demonstrates that any suggestion that the eyewitness chose the correct person from the line-up inflates eyewitness confidence. We hypothesized that the effect would also persist in eyewitnesses who viewed multiple perpetrator crimes. We analysed 1991 of the 226 eyewitnesses and found that postidentification feedback did not significantly affect eyewitness identification and role confidence |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/39649 |
| institution | University of Cape Town (South Africa) |
| language | Eng |
| last_indexed | 2026-06-10T12:47:38.129Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2024 |
| publishDateRange | 2024 |
| publishDateSort | 2024 |
| publisher | Department of Psychology |
| publisherStr | Department of Psychology |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/39649 Does the Post-Identification Feedback Effect Persist in Eyewitnesses Viewing Multiple Perpetrator Line-ups? Methola, Bokang Tredoux, Colin Nortje Alicia Psychology Eyewitness testimonies are integral pieces of evidence in criminal justice investigations. This is because justified conviction and appropriate sentencing can flow from eyewitness testimony. However, research has demonstrated that eyewitness testimony is often unreliable, even more so, the testimony of eyewitnesses who have witnessed multiple perpetrator crimes. This is because eyewitnesses to multiple perpetrator crimes have the challenging tasks of recalling the crime scene, correctly identifying the perpetrators involved in the crime, and assigning the correct role to each perpetrator. Eyewitnesses in the current study viewed a mock crime video comprising one, two, or five perpetrators and were instructed to answer a number of crime-related questions and identify the perpetrator/s from the line-up. The line-ups were presented sequentially (with one perpetrator in each line-up) for eyewitnesses who viewed the multiple perpetrator crimes. Additionally, these eyewitnesses were required to pair each perpetrator to the role they played in the crime. Analysis of the sample (N = 226) revealed that the accuracy of eyewitnesses decreased as the number of perpetrators increased. The ‘post-identification feedback' effect has not yet been studied in multiple perpetrator crimes. Single perpetrator research demonstrates that any suggestion that the eyewitness chose the correct person from the line-up inflates eyewitness confidence. We hypothesized that the effect would also persist in eyewitnesses who viewed multiple perpetrator crimes. We analysed 1991 of the 226 eyewitnesses and found that postidentification feedback did not significantly affect eyewitness identification and role confidence 2024-05-20T11:28:07Z 2024-05-20T11:28:07Z 2023 2024-05-17T12:36:46Z Thesis / Dissertation Masters http://hdl.handle.net/11427/39649 Eng application/pdf Department of Psychology Faculty of Humanities |
| spellingShingle | Psychology Methola, Bokang Does the Post-Identification Feedback Effect Persist in Eyewitnesses Viewing Multiple Perpetrator Line-ups? |
| thesis_degree_str | Master's |
| title | Does the Post-Identification Feedback Effect Persist in Eyewitnesses Viewing Multiple Perpetrator Line-ups? |
| title_full | Does the Post-Identification Feedback Effect Persist in Eyewitnesses Viewing Multiple Perpetrator Line-ups? |
| title_fullStr | Does the Post-Identification Feedback Effect Persist in Eyewitnesses Viewing Multiple Perpetrator Line-ups? |
| title_full_unstemmed | Does the Post-Identification Feedback Effect Persist in Eyewitnesses Viewing Multiple Perpetrator Line-ups? |
| title_short | Does the Post-Identification Feedback Effect Persist in Eyewitnesses Viewing Multiple Perpetrator Line-ups? |
| title_sort | does the post identification feedback effect persist in eyewitnesses viewing multiple perpetrator line ups |
| topic | Psychology |
| url | http://hdl.handle.net/11427/39649 |
| work_keys_str_mv | AT metholabokang doesthepostidentificationfeedbackeffectpersistineyewitnessesviewingmultipleperpetratorlineups |