Error and Uncertainty in Bloodstain Pattern Analysis: Archived Webinar

In case you missed it, the webinar presented by the Forensic Technology Center of Excellence, "Error & Uncertainty in Bloodstain Pattern Analysis," has been archived and can be watched at your leisure.

Error and uncertainty are two concepts which have gained significant attention in forensic science in recent years. Uncertainty is generally applied to quantitative conclusions in the form of uncertainty of measurement while error can involve quantitative values but most often deals with qualitative statements by forensic scientists. Daubert admissibility standards require the consideration of a method’s known error rate. This presentation provided a general introduction to the concepts of error and uncertainty as well as the differences between them. It will then apply these concepts to quantitative and qualitative aspects of bloodstain pattern analysis (BPA). Quantitative aspects of BPA which will be discussed include the locations of areas of convergences, areas of origin, and the minimum number of impacts. The presentation also discussed how the quality of stains within a pattern, the quantity of these stains, as well as characteristics of the substance, can increase or decrease the uncertainty of pattern classification. Past research on these topics was also discussed.

This webinar was recorded in its entirety at the time of the live event in order to capture the one on one interaction with the presenter.

Click here to view the webinar now.

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Recovering Latent Fingerprints from Cadavers

IN A HOMICIDE CASE, the recovery of latent impressions from a body is just one more step that should be taken in the process of completing a thorough search. This article is directed at crime-scene technicians and the supervisors who support and direct evidence-recovery operations both in the field and in the controlled settings of the medical examiner’s office or the morgue under the coroner’s direction.