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General Departmental Seminar Series


Statistical Evaluation of DNA Evidence
in the Courts: A Review

Jae Won Lee, Department of Statistics, Korea University

Friday, February 23, 2001, 12:00-1:00 p.m.

3285 Medical Sciences Center - 1300 University Ave.

ABSTRACT

Forensic science is experiencing a period of rapid change because of the dramatic evolution of DNA profiling. DNA analysis becomes the most important tool for human identification. In particular, the use of hypervariable loci such as VNTR and STR made the identification using DNA more useful. However, DNA profiles do not always uniquely identify individuals. In most cases, it is due to the relationships between two compared persons(suspect and criminal, alleged father and true father), and thus it is important that the forensic scientist should evaluate appropriately the power of DNA evidence. Especially, the relative effect in the identification might be considerable in the paternity cases than in the criminal cases.

In this talk, I will review and discuss some of the statistical issues involved in the interpretation of DNA evidence in the courts. Some recently proposed statistical methodologies are also illustrated with real numerical examples in both paternity and criminal cases. Especially, in the paternity case where the alleged father's genotypes are unavailable (like Yves Montang's case), I will suggest a new discrimation rule based on the simulation results from the data in the Institute of Legal Medicine at Korea University.


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