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Multimedia Listing

Probabilistic Genotyping Summation and Special Topics

July 2019

Throughout the Probabilistic Genotyping of Evidentiary DNA Typing Results virtual workshop series, we have reviewed aspects of DNA mixture interpretation and have seen that probabilistic genotyping (PG) software can serve as a tool to assist the DNA Examiner in identifying possible genotype sets within a mixture and then calculating a likelihood ratio (LR). Approaches to modeling were shared by the developers of different PG software programs, followed by examples of internal validation studies and results.

Sex Offender Residency Restrictions: Implementation and Impact

July 2019

Numerous states and hundreds of municipalities have laws restricting the location of a convicted sex offender's residence. Little is known about the effectiveness of these restrictions. Do they keep children safer or give a false sense of safety? Some people suggest these laws are driven by media attention to a few cases. Others believe they are not grounded in research.

Using ODMAP to Harness Data and Accelerate Action

July 2019

By combining the data in ODMAP with collaborative partnerships which span different disciplines, localities can develop and deploy a real-time plan to reduce both fatal and non-fatal overdoses.

This webinar was presented by the NIJ Forensic Technology Center of Excellence on July 16, 2019.

Uncertainty and Limitations of Probabilistic Genotyping Systems

June 2019

Has a person of interest contributed DNA to a mixture obtained from evidence? Is that DNA associated with a crime? Both are questions that cannot be answered with absolute certainty. This module of the Probabilistic Genotyping of Evidentiary DNA Typing Results workshop series addresses the uncertainty and limitations of probabilistic genotyping systems that are used to calculate likelihood ratios and infer genotype sets from DNA typing results.

Medicolegal Death Investigation: Locating and Notifying Next of Kin, Part 1

June 2019

Locating and notifying the next of kin is an important part of medicolegal death investigation. This presentation provided examples of resources at the scene and online to assist medicolegal death investigators (MDIs) with identifying the decedent’s next of kin. Some of these resources include talking to witnesses, searching cell phone information, social media accounts, public records, and criminal databases. Additionally, Namus was discussed as a resource if a next of kin cannot be identified. 

Probabilistic Genotyping in Court

June 2019

Biological modeling, statistical theory, and the computer processing of probabilistic genotyping systems are based on long- standing principles, yet their usage in U.S. courts has been limited to the past few years. This module of the Probabilistic Genotyping of Evidentiary DNA Typing Results web series addresses topics relevant to the admissibility of probabilistic genotyping results and the presentation of results in criminal proceedings. Various decisions related to probabilistic genotyping will be summarized from a legal perspective.

Representation of Statistical Weight to Stakeholders and the Court

June 2019

Historically, the predominant means of assigning statistical weight to many DNA mixtures in the U.S. has been the combined probability of inclusion, or CPI. Accordingly, many forensic DNA analysts, as well as attorneys and judges, are well-versed in the CPI as a match probability. In the fifth module of this workshop series devoted to probabilistic genotyping, the presenters will help DNA analysts and legal professionals understand degrees of statistical weight and properly communicate likelihood ratios and their meaning.

Probabilistic Genotyping Software and Output

May 2019

Over a dozen probabilistic genotyping software programs are commercially available or accessible as freeware. This module presents an instructive overview by software developers of three programs that are supported by published developmental validation.

This webinar is part 3 of the Probabilistic Genotyping Of Evidentiary DNA Typing Results Webinar Series and was presented by the NIJ Forensic Technology Center of Excellence on May 22, 2019.

Growing the Forensic Nursing Specialty

May 2019

This webinar highlights leaders in the forensic nursing movement and efforts of those actively trying to grow this critical specialty through scientific evidence and experience, to best serve vulnerable patients seeking help following trauma.

This webinar was presented by the NIJ Forensic Technology Center of Excellence on May 21, 2019.