The interpretation of forensic conclusions by professionals and students: Does experience matter?

Are professionals better at assessing the evidential strength of different types of forensic conclusions compared to students? In an online questionnaire 96 crime investigation and law students, and 269 crime investigation and legal professionals assessed three fingerprint examination reports. All r...

Full description

Bibliographic Details
Main Authors: Elmarije K. van Straalen, Christianne J. de Poot, Marijke Malsch, Henk Elffers
Format: Article
Language:English
Published: Elsevier 2023-01-01
Series:Forensic Science International: Synergy
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2589871X23001249
_version_ 1797398578801410048
author Elmarije K. van Straalen
Christianne J. de Poot
Marijke Malsch
Henk Elffers
author_facet Elmarije K. van Straalen
Christianne J. de Poot
Marijke Malsch
Henk Elffers
author_sort Elmarije K. van Straalen
collection DOAJ
description Are professionals better at assessing the evidential strength of different types of forensic conclusions compared to students? In an online questionnaire 96 crime investigation and law students, and 269 crime investigation and legal professionals assessed three fingerprint examination reports. All reports were similar, except for the conclusion part which was stated in a categorical (CAT), verbal likelihood ratio (VLR) or numerical likelihood ratio (NLR) conclusion with high or low evidential strength. The results showed no significant difference between the groups of students and professionals in their assessment of the conclusions. They all overestimated the strength of the strong CAT conclusion compared to the other conclusion types and underestimated the strength of the weak CAT conclusion. Their background (legal vs. crime investigation) did have a significant effect on their understanding. Whereas the legal professionals performed better compared to the crime investigators, the legal students performed worse compared to crime investigation students.
first_indexed 2024-03-09T01:27:31Z
format Article
id doaj.art-9f3ae70c9b424becb5df64abd6b95d93
institution Directory Open Access Journal
issn 2589-871X
language English
last_indexed 2024-03-09T01:27:31Z
publishDate 2023-01-01
publisher Elsevier
record_format Article
series Forensic Science International: Synergy
spelling doaj.art-9f3ae70c9b424becb5df64abd6b95d932023-12-10T06:17:13ZengElsevierForensic Science International: Synergy2589-871X2023-01-017100437The interpretation of forensic conclusions by professionals and students: Does experience matter?Elmarije K. van Straalen0Christianne J. de Poot1Marijke Malsch2Henk Elffers3Amsterdam University of Applied Sciences, Forensic Sciences, P.O. Box 1025, 1000 BA Amsterdam, the Netherlands; VU University Amsterdam, Criminology Department, De Boelelaan 1105, 1081 HV Amsterdam, the Netherlands; Corresponding author. Amsterdam University of Applied Sciences, Forensic Sciences, P.O. Box 1025, 1000 BA Amsterdam, the Netherlands.Amsterdam University of Applied Sciences, Forensic Sciences, P.O. Box 1025, 1000 BA Amsterdam, the Netherlands; VU University Amsterdam, Criminology Department, De Boelelaan 1105, 1081 HV Amsterdam, the Netherlands; Police Academy of the Netherlands, Apeldoorn, the NetherlandsNetherlands Institute for the Study of Crime and Law Enforcement NSCR, Amsterdam, the Netherlands; Open University, Heerlen, the NetherlandsNetherlands Institute for the Study of Crime and Law Enforcement NSCR, Amsterdam, the NetherlandsAre professionals better at assessing the evidential strength of different types of forensic conclusions compared to students? In an online questionnaire 96 crime investigation and law students, and 269 crime investigation and legal professionals assessed three fingerprint examination reports. All reports were similar, except for the conclusion part which was stated in a categorical (CAT), verbal likelihood ratio (VLR) or numerical likelihood ratio (NLR) conclusion with high or low evidential strength. The results showed no significant difference between the groups of students and professionals in their assessment of the conclusions. They all overestimated the strength of the strong CAT conclusion compared to the other conclusion types and underestimated the strength of the weak CAT conclusion. Their background (legal vs. crime investigation) did have a significant effect on their understanding. Whereas the legal professionals performed better compared to the crime investigators, the legal students performed worse compared to crime investigation students.http://www.sciencedirect.com/science/article/pii/S2589871X23001249Forensic conclusionsCriminal justice professionalsInfluence of experienceEvidence interpretationCommunicating uncertainty
spellingShingle Elmarije K. van Straalen
Christianne J. de Poot
Marijke Malsch
Henk Elffers
The interpretation of forensic conclusions by professionals and students: Does experience matter?
Forensic Science International: Synergy
Forensic conclusions
Criminal justice professionals
Influence of experience
Evidence interpretation
Communicating uncertainty
title The interpretation of forensic conclusions by professionals and students: Does experience matter?
title_full The interpretation of forensic conclusions by professionals and students: Does experience matter?
title_fullStr The interpretation of forensic conclusions by professionals and students: Does experience matter?
title_full_unstemmed The interpretation of forensic conclusions by professionals and students: Does experience matter?
title_short The interpretation of forensic conclusions by professionals and students: Does experience matter?
title_sort interpretation of forensic conclusions by professionals and students does experience matter
topic Forensic conclusions
Criminal justice professionals
Influence of experience
Evidence interpretation
Communicating uncertainty
url http://www.sciencedirect.com/science/article/pii/S2589871X23001249
work_keys_str_mv AT elmarijekvanstraalen theinterpretationofforensicconclusionsbyprofessionalsandstudentsdoesexperiencematter
AT christiannejdepoot theinterpretationofforensicconclusionsbyprofessionalsandstudentsdoesexperiencematter
AT marijkemalsch theinterpretationofforensicconclusionsbyprofessionalsandstudentsdoesexperiencematter
AT henkelffers theinterpretationofforensicconclusionsbyprofessionalsandstudentsdoesexperiencematter
AT elmarijekvanstraalen interpretationofforensicconclusionsbyprofessionalsandstudentsdoesexperiencematter
AT christiannejdepoot interpretationofforensicconclusionsbyprofessionalsandstudentsdoesexperiencematter
AT marijkemalsch interpretationofforensicconclusionsbyprofessionalsandstudentsdoesexperiencematter
AT henkelffers interpretationofforensicconclusionsbyprofessionalsandstudentsdoesexperiencematter