Using eye-tracking, head-mounted camera technology and verbal protocol analysis as a methodology to better understand Volume Crime Scene Investigator practice

Hdl Handle:
http://hdl.handle.net/10149/579936
Title:
Using eye-tracking, head-mounted camera technology and verbal protocol analysis as a methodology to better understand Volume Crime Scene Investigator practice
Authors:
Butler, M. (Mark)
Advisors:
Thompson, T. J. U. (Tim)
Citation:
Butler, M. (2014) Using eye-tracking, head-mounted camera technology and verbal protocol analysis as a methodology to better understand Volume Crime Scene Investigator practice. Unpublished PhD Thesis. Teesside University
Publisher:
Teesside University
Issue Date:
Apr-2014
URI:
http://hdl.handle.net/10149/579936
Abstract:
Literature Review: Expertise, decision making and situation awareness literature have allowed a better understanding of practitioner performance in Engineering, Healthcare and Sport. Discourse is thin in the domain of Crime Scene Examination, although Hierarchical Tasks Analysis, Distributed Cognition, Team Working and Perception have all received attention in recent years. The use of camera technology to uncover performance has also found footing in diverse professions, notably Firefighting and Social Work. Crime Scene Investigator practice is proposed as being a fertile area of study, to make apparent aspects of the work that are tacit, as well as to ascertain if performance metrics in the sector connect with the tacit knowledge expressed in the role. Methodology: This study explored the differences in searching strategies between expert and novice Crime Scene Examiners (n=12) in a simulated environment, before discussing a longitudinal ethnographic examination of how Volume Crime Scene Investigators (n=4) make sense of their practice. Eye-tracker and head-mounted camera technology was used to capture performance from an own point of view perceptive. Nvivo 9 was utilised to collate and code video data, field notes and interview transcriptions. Results & Discussion: Results from verbal protocol analysis and eye-tracker recordings indicate that expert examiners target fewer objects within the crime scene space however spend longer on the objects being viewed. Field study results report that Volume Crime Scene Investigators engage in sharing tacit knowledge, this impacted on their strategies or perception of obtaining forensic evidence. In addition the analysis of coded data from video and verbal protocol reports found that specific physical aspects of examination practice such as fingerprint powdering were aligned to decision making or analysis processes. For example, commenting on the morphology of the surface being examined. Furthermore examiners engaged in and highlighted aspects of their role they felt were important but were not captured in any metrics. Conclusion: It is proposed this new understanding will be of use to those in developing crime scene investigation practitioners as well as presenting related literature on how expertise in the domain can be recognised, elicited and developed in others. This work also sheds light on the value of sector standards for this field along with what is needed to make them more user- friendly for the developing practitioner.
Type:
Thesis or dissertation
Language:
en
Keywords:
crime scene investigation; forensic science; forensic investigation; national occupational standards; decision making

Full metadata record

DC FieldValue Language
dc.contributor.advisorThompson, T. J. U. (Tim)en
dc.contributor.authorButler, M. (Mark)en
dc.date.accessioned2015-10-20T15:08:50Zen
dc.date.available2015-10-20T15:08:50Zen
dc.date.issued2014-04en
dc.identifier.urihttp://hdl.handle.net/10149/579936en
dc.description.abstractLiterature Review: Expertise, decision making and situation awareness literature have allowed a better understanding of practitioner performance in Engineering, Healthcare and Sport. Discourse is thin in the domain of Crime Scene Examination, although Hierarchical Tasks Analysis, Distributed Cognition, Team Working and Perception have all received attention in recent years. The use of camera technology to uncover performance has also found footing in diverse professions, notably Firefighting and Social Work. Crime Scene Investigator practice is proposed as being a fertile area of study, to make apparent aspects of the work that are tacit, as well as to ascertain if performance metrics in the sector connect with the tacit knowledge expressed in the role. Methodology: This study explored the differences in searching strategies between expert and novice Crime Scene Examiners (n=12) in a simulated environment, before discussing a longitudinal ethnographic examination of how Volume Crime Scene Investigators (n=4) make sense of their practice. Eye-tracker and head-mounted camera technology was used to capture performance from an own point of view perceptive. Nvivo 9 was utilised to collate and code video data, field notes and interview transcriptions. Results & Discussion: Results from verbal protocol analysis and eye-tracker recordings indicate that expert examiners target fewer objects within the crime scene space however spend longer on the objects being viewed. Field study results report that Volume Crime Scene Investigators engage in sharing tacit knowledge, this impacted on their strategies or perception of obtaining forensic evidence. In addition the analysis of coded data from video and verbal protocol reports found that specific physical aspects of examination practice such as fingerprint powdering were aligned to decision making or analysis processes. For example, commenting on the morphology of the surface being examined. Furthermore examiners engaged in and highlighted aspects of their role they felt were important but were not captured in any metrics. Conclusion: It is proposed this new understanding will be of use to those in developing crime scene investigation practitioners as well as presenting related literature on how expertise in the domain can be recognised, elicited and developed in others. This work also sheds light on the value of sector standards for this field along with what is needed to make them more user- friendly for the developing practitioner.en
dc.language.isoenen
dc.publisherTeesside Universityen
dc.subjectcrime scene investigationen
dc.subjectforensic scienceen
dc.subjectforensic investigationen
dc.subjectnational occupational standardsen
dc.subjectdecision makingen
dc.titleUsing eye-tracking, head-mounted camera technology and verbal protocol analysis as a methodology to better understand Volume Crime Scene Investigator practiceen
dc.typeThesis or dissertationen
dc.publisher.departmentSchool of Science and Engineeringen
dc.type.qualificationnamePhDen
dc.type.qualificationlevelDoctoralen
or.citation.harvardButler, M. (2014) Using eye-tracking, head-mounted camera technology and verbal protocol analysis as a methodology to better understand Volume Crime Scene Investigator practice. Unpublished PhD Thesis. Teesside Universityen
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