The butcher, the baker, the candlestick maker: investigating facial recognition for multiple-perpetrator crimes
| dc.contributor.advisor | Tredoux, Colin | |
| dc.contributor.advisor | Vredeveldt, Annelies | |
| dc.contributor.author | Nortje, Alicia | |
| dc.date.accessioned | 2019-02-13T13:09:16Z | |
| dc.date.available | 2019-02-13T13:09:16Z | |
| dc.date.issued | 2018 | |
| dc.date.updated | 2019-02-13T12:48:42Z | |
| dc.description.abstract | In the United States, 20% of all violent crime is committed by multiple perpetrators. Despite the prevalence of multiple-perpetrator crimes, most published eyewitness research uses a single-perpetrator paradigm: that is, witnesses view a crime committed by a single perpetrator whom they must recognise later. Multiple-perpetrator crimes, however, present with several problems. Police procedure for administering multiple-suspect parades is poorly defined. Furthermore, eyewitnesses must make multiple identifications, and are tasked with a unique memory problem of perpetrator-role assignment. I studied these problems in the following ways: (a) a survey among South African detectives (N = 75) to investigate how multiple suspect parades are administered in practice; (b) two face recognition experiments where the number of face-attribute pairs was manipulated at encoding to investigate the effect of set size on both item recognition (for attributes and faces), and associative memory performance (i.e., matching identity to role; N = 70, and N = 67); (c) an eyewitness experiment where participants studied a simulated crime committed by up to 10 perpetrators whom they had to recognise later (N = 200); and (d) a set of simulations testing a revised version of the Interactive Activation and Competition network proposed by Burton et al. (1990) as a computational account of the memory difficulties experienced by eyewitnesses to multiple-perpetrator crimes. Overall, the results suggest that associative memory is particularly vulnerable to the negative effects of set size, and that role-players in law and psychology should consider the implications of these difficulties in court and the laboratory. | |
| dc.identifier.apacitation | Nortje, A. (2018). <i>The butcher, the baker, the candlestick maker: investigating facial recognition for multiple-perpetrator crimes</i>. (). University of Cape Town ,Faculty of Humanities ,Department of Psychology. Retrieved from http://hdl.handle.net/11427/29506 | en_ZA |
| dc.identifier.chicagocitation | Nortje, Alicia. <i>"The butcher, the baker, the candlestick maker: investigating facial recognition for multiple-perpetrator crimes."</i> ., University of Cape Town ,Faculty of Humanities ,Department of Psychology, 2018. http://hdl.handle.net/11427/29506 | en_ZA |
| dc.identifier.citation | Nortje, A. 2018. The butcher, the baker, the candlestick maker: investigating facial recognition for multiple-perpetrator crimes. University of Cape Town. | en_ZA |
| dc.identifier.ris | TY - Thesis / Dissertation AU - Nortje, Alicia AB - In the United States, 20% of all violent crime is committed by multiple perpetrators. Despite the prevalence of multiple-perpetrator crimes, most published eyewitness research uses a single-perpetrator paradigm: that is, witnesses view a crime committed by a single perpetrator whom they must recognise later. Multiple-perpetrator crimes, however, present with several problems. Police procedure for administering multiple-suspect parades is poorly defined. Furthermore, eyewitnesses must make multiple identifications, and are tasked with a unique memory problem of perpetrator-role assignment. I studied these problems in the following ways: (a) a survey among South African detectives (N = 75) to investigate how multiple suspect parades are administered in practice; (b) two face recognition experiments where the number of face-attribute pairs was manipulated at encoding to investigate the effect of set size on both item recognition (for attributes and faces), and associative memory performance (i.e., matching identity to role; N = 70, and N = 67); (c) an eyewitness experiment where participants studied a simulated crime committed by up to 10 perpetrators whom they had to recognise later (N = 200); and (d) a set of simulations testing a revised version of the Interactive Activation and Competition network proposed by Burton et al. (1990) as a computational account of the memory difficulties experienced by eyewitnesses to multiple-perpetrator crimes. Overall, the results suggest that associative memory is particularly vulnerable to the negative effects of set size, and that role-players in law and psychology should consider the implications of these difficulties in court and the laboratory. DA - 2018 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2018 T1 - The butcher, the baker, the candlestick maker: investigating facial recognition for multiple-perpetrator crimes TI - The butcher, the baker, the candlestick maker: investigating facial recognition for multiple-perpetrator crimes UR - http://hdl.handle.net/11427/29506 ER - | en_ZA |
| dc.identifier.uri | http://hdl.handle.net/11427/29506 | |
| dc.identifier.vancouvercitation | Nortje A. The butcher, the baker, the candlestick maker: investigating facial recognition for multiple-perpetrator crimes. []. University of Cape Town ,Faculty of Humanities ,Department of Psychology, 2018 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/29506 | en_ZA |
| dc.language.iso | eng | |
| dc.publisher.department | Department of Psychology | |
| dc.publisher.faculty | Faculty of Humanities | |
| dc.publisher.institution | University of Cape Town | |
| dc.subject.other | Psychology | |
| dc.title | The butcher, the baker, the candlestick maker: investigating facial recognition for multiple-perpetrator crimes | |
| dc.type | Doctoral Thesis | |
| dc.type.qualificationlevel | Doctoral | |
| dc.type.qualificationname | PhD |