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Forensic Thinking, Fast and Slow

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Presentation on theme: "Forensic Thinking, Fast and Slow"— Presentation transcript:

1 Forensic Thinking, Fast and Slow
International Conference on Forensic Research & Technology October, 2012 Chicago, Illinois Mark W Perlin, PhD, MD, PhD Cybergenetics, Pittsburgh, PA Cybergenetics © Cybergenetics ©

2 Zombie DNA

3 Rush to judgment

4 Not so fast First contributor Second contributor

5 Is it a match? YES? NO? MAYBE!

6 Match statistic Probability(evidence match)
Probability(coincidental match) • slow, deliberative thought • consider every possibility • objective & unbiased inference • only see evidence, never a suspect • provide information: strength of match

7 Plain language A match between the evidence and the suspect is
12.3 trillion times more probable than a coincidental match to an unrelated person

8 Information age Perlin MW. Forensic science in the information age. Forensic Magazine. 2012;9(2):17-21.

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