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Forensic hair analysis - Worldwide survey results
Melissa Airlie1, James Robertson2, Elizabeth Brooks2
1University of Canberra, National Centre for Forensic Studies, Faculty of Science and Technology, 11 Kirinari Street, Bruce, ACT 2617, Australia; Forensic Services Group, Queensland Police Service, Level 4, 200 Roma Street, Brisbane 4000, Queensland, Australia.
Forensic hair analysis practices show support for evidence value, but terminology varies. The survey highlights preferences in collection and microscopy, encouraging standardization and collaboration for future validation studies.
Area of Science:
- Forensic Science
- Criminalistics
Background:
- Forensic hair analysis, while valuable, faces scrutiny due to historical issues with expert testimony.
- Understanding current practices and challenges is crucial for improving reliability and admissibility.
Purpose of the Study:
- To assess current methodologies, terminology, and potential biases in forensic hair analysis.
- To gather demographic and workplace data from hair analysts.
- To identify current and future issues impacting the field.
Main Methods:
- An online survey was distributed globally to forensic hair analysts.
- 176 analysts from 12 countries participated.
- Questions covered accreditation, evidence value, collection, packaging, methodology, terminology, and reporting.
Main Results:
- The probative value of hair evidence was generally supported by participants.
- Preferences were identified for collection methods, packaging, microscopy use, and notetaking, with some variation in mounting medium selection.
- Significant variation in terminology for analysis and reporting was observed.
Conclusions:
- Standardization of terminology and reporting in forensic hair analysis is needed.
- Caution regarding the use of statistics was expressed.
- Enhanced training and collaboration are encouraged to address identified issues and support future validation studies.
