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Forensic Science . CHAPTER 1 INTRODUCTION. Learning Objectives. Describe how the scientific method is used to solve forensic problems. Provide examples of the growth and development of forensic science through history.

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Forensic Science


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    1. Forensic Science CHAPTER 1 INTRODUCTION

    2. Learning Objectives • Describe how the scientific method is used to solve forensic problems. • Provide examples of the growth and development of forensic science through history. • Understand the relationship between our legal system and prosecution of criminals.

    3. What is forensic science? • The study and the application of science to matters of law.

    4. Criminology Includes the psychological angle: studying the crime scene for motive, traits, and behavior that will help to interpret the evidence

    5. So what does a crime lab look like? • Physical science unit Chemistry Physics Geology • Biology unit • Firearms and ballistics unit • Document examination unit • Photography unit The most common types of evidence examined are drugs, firearms, and fingerprints.

    6. What specialties are found in a crime lab? • Forensic pathology • Forensic anthropology • Forensic entomology • Forensic psychiatry • Forensic odontology • Forensic engineering • Cybertechnology • Geology • Environmental science • Palynology • Polygraphy • Voiceprint analysis

    7. Federal Crime Labs • FBI: Federal Bureau of Investigation • DEA: Drug Enforcement Agency • ATF: Alcohol, Tobacco, and Firearms • USPS: United States Postal Service • U.S. Fish and Wildlife Service • Department of Homeland Security • Department of the Treasury

    8. Scientific Method in forensic science • Observe a problem or questioned evidence and collect objective data. • Consider a hypothesis or possible solution. • Examine, test, and then analyze the evidence. • Determine the significance of the evidence. • Formulate a theory based on evaluation of the significance of the evidence.

    9. Criminal justice and the law • Constitutional law • Statutory law • Common law or case law • Civil law • Criminal law • Equity law • Administrative law

    10. The Bill of Rights Guarantees; • Presumed innocent until proven guilty • Not to be searched unreasonably • Not to be arrested without probable cause • Against unreasonable seizure of personal property • Against self-incrimination • To fair questioning by police • To protection from physical harm throughout the justice process • To an attorney • To trial by jury • To know any charges against oneself

    11. Admissibility of Evidence • The Daubert Ruling - From the 1993 case DaubertvsDow • The judge decides if the evidence can be entered into the trial. Admissibility is determined by: Whether the theory or technique can be tested Whether the science has been offered for peer review Whether the rate of error is acceptable Whether the method at issue enjoys widespread acceptance Whether the theory or technique follows standards