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Why do we need good forensic science ?

Why do we need good forensic science ?. A Jamieson. The history of the justice systems of the world provide many examples of flawed decisions. A direct consequence of flawed eye witness testimony . The scope for error in the forensic process.

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Why do we need good forensic science ?

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  1. Why do we need good forensic science ? A Jamieson

  2. The history of the justice systems of the world provide many examplesof flawed decisions. • A direct consequence of flawed eye witness testimony.

  3. The scope for error in the forensic process • The diligent, professional, dispassionate and impartial scientist. • will glean the maximum information from the most meagre physical evidence. • The unintentional may be caused by an error anywhere in the chain of search, recovery, analysis, interpretation or report.

  4. Explanation • Who is the target. • What is the purpose of the explanation.

  5. Quality of Evidence • The quality of evidence must not be confused with the standard of analytical accuracy and precision.

  6. Science • The scientific expert must be constantly cognisant of at least the following facts.

  7. firstly, never totally discount the possibility that the effect that youobserve could have occurred in a different way to what you surmise. Secondly, know the limitations of the tests we use. Fewtests have no false positives or false negatives. Thirdly, know the difference between experience and expertise.

  8. Experience and expertise A scientific expert then requires special knowledge of science,not just a casual awareness gained through experience - What is science - What makes a conclusion - Explanation scientific

  9. USA - Expert witness 1 The Frye Test --->> General Acceptance 2 The Daubert Test - Relevancy - Reliability - Peer review - Known error rate - Standard controlling - acceptance relevant community

  10. Thailand - Expert witness The Criminal Procedure Code Count 243

  11. LAW 0F EVIDENCE 1. Admission 2. Absolute or lrrebuttable Presumption 3 .Generally Known Fact 4. Evidence

  12. Admissibility Of Evidence 1. Admissible Evidence 2. Inadmissible Evidence

  13. Conclusion the people whose lives will depend upon the practitioner's capability to report clearly and accurately the results of their investigation. If forensic science is to achieve and maintain the status it deserves, each of us owes this duty of care to all of those affected by our work.

  14. THANK YOU

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