Open Questions

Does microscopic hair comparison meet a scientific reliability standard?

Citation Formats

General Reference

Crime and Justice Atlas. "Does microscopic hair comparison meet a scientific reliability standard?." Accessed August 30, 2026. https://crime.interactiveatlas.org/open-questions-index/does-microscopic-hair-comparison-meet-a-scientific-reliability-standard.

APA Style

Crime and Justice Atlas. (n.d.). Does microscopic hair comparison meet a scientific reliability standard?. Retrieved August 30, 2026, from https://crime.interactiveatlas.org/open-questions-index/does-microscopic-hair-comparison-meet-a-scientific-reliability-standard

BibTeX

@misc{crimeandjusticeatlas-does-microscopic-hair-comparison-meet-a,
  author = {Crime and Justice Atlas},
  title = {Does microscopic hair comparison meet a scientific reliability standard?},
  year = {2026},
  url = {https://crime.interactiveatlas.org/open-questions-index/does-microscopic-hair-comparison-meet-a-scientific-reliability-standard},
  note = {Accessed August 30, 2026}
}

Open Question

A joint FBI, Department of Justice and Innocence Project review found that FBI examiners had overstated the significance of microscopic hair comparison matches in the overwhelming majority of trial testimony and reports reviewed, in cases going back decades, including several that led to convictions later overturned by DNA evidence.

What would resolve this A published statistical error-rate study for microscopic hair comparison under blind proficiency testing, and a documented professional consensus on what conclusion language, if any, the method can support without DNA confirmation.

OpenForensic science standards and trace evidence analysisInnocence Project: FBI Testimony on Microscopic Hair Analysis Review

Cross-Tradition Connections

Associated With

FBI Laboratory

In 2015 the FBI itself reported that Laboratory examiners had overstated the reliability of microscopic hair comparison testimony in the large majority of cases reviewed, the finding underlying this atlas open question on the technique.

Source Wikipedia: FBI Laboratory