Department of Technology Crime Investigation, Taiwan Police College, 153, Sec. 3, Xinglong Rd., Wenshan Dist., Taipei City, 11696, Taiwan.
Program of Learning Sciences, Institute for Research Excellence in Learning Sciences, National Taiwan Normal University, 162, Sec 1, Hoping E. Rd, Taipei, 106, Taiwan.
J Forensic Sci. 2022 May;67(3):1072-1083. doi: 10.1111/1556-4029.14970. Epub 2022 Jan 5.
Crime scene investigation serves as an important source of information for law enforcement officers when running a case. Effective leads are uncovered based on the knowledge, technique, and experience of the crime scene investigator. This study utilized eye-tracking technology to understand different decision makers'visual behaviors and decision-making process when studying a crime scene picture. A total of 42 college students majored in crime investigation were recruited as the subjects of the study. Eye movement data were collected and analyzed using t-test and ANOVA on eye-tracking measures of areas of interest (AOI) for visual attention distributions as well as lag sequence analysis (LSA), heat map, and scan path observations for visual transfer patterns. The results showed that participants who made the correct decision were faster in identifying the key target. Regardless of whether they made the correct decision or not, their visual attention was fixated on the answer option of their choosing. Additionally, the subjects' attention must be shifted to the key target in order to make the correct decision. This study successfully applied the eye-tracking method to explore the investigation and decision-making process of inspecting a crime scene picture. Future studies can apply the eye-tracking method to deeply understand the process of information processing in investigating criminal scene pictures and provide more suggestions for professional training curriculum and instruction.
犯罪现场调查是执法人员办案的重要信息来源。有效的线索是基于犯罪现场调查员的知识、技术和经验发现的。本研究利用眼动追踪技术来理解不同决策者在研究犯罪现场照片时的视觉行为和决策过程。共有 42 名主修犯罪调查的大学生被招募为研究对象。使用眼动追踪技术收集和分析眼动数据，对注视点兴趣区（AOI）的眼动追踪测量值进行 t 检验和方差分析，以及滞后序列分析（LSA）、热点图和扫描路径观察，以了解视觉转移模式。结果表明，做出正确决策的参与者在识别关键目标时更快。无论他们是否做出正确的决策，他们的视觉注意力都集中在他们选择的答案选项上。此外，为了做出正确的决策，受试者的注意力必须转移到关键目标上。本研究成功地将眼动追踪方法应用于探索犯罪现场照片的调查和决策过程。未来的研究可以应用眼动追踪方法来深入了解调查犯罪现场图片过程中的信息处理过程，并为专业培训课程和教学提供更多建议。
