Study this crime scene

1. How many windows are there?

2. How many sources of electrical light are there?

3. What 3 items are on the night stand/end table next to the bed?

4. Which window is open?

5. What color is the pair of pants that is hanging from the frame of the closet?

Two

Two

Lamp, Clock, and Remote

Left window

There isn’t a pair of pants on the closet frame. It’s a dress.

Study this crime scene

Forensic Science

The Crime Lab• J. Edgar Hoover: 1932—FBI forensic lab was created.

• The ever increasing number of crime laboratories is partly due to:

1. Supreme Court decisions in the 1960s responsible for police placing greater emphasis on scientifically evaluated evidence.

2. Crime laboratories inundated with drug specimens due to accelerated drug abuse.

3. The advent of DNA profiling.

Units:• Physical Science• Biology• Fire Arms• Document Examination• Photography

Optional Services:Units:ToxicologyLatent FingerprintPolygraphVoiceprintCrime Scene Investigation

Basic Services of a Full-Service Crime Laboratory

Other Special Forensic Science Services:

Units:Forensic PsychiatryForensic OdontologyForensic EngineeringForensic Computer & Digital Analysis

Chapter 2 (pgs58-61)*Forensic Pathology*Forensic Anthropology*Forensic Entomology

CRIME LAB UNIT GROUP ACTIVITY:

Each group will be responsible for completing and illustration of each Unit assigned. Please include the following:

1. Name of the Unit2. Picture that illustrates the Unit3. Brief description of what the Unit is

responsible for4. Present the completed Unit info to the class

BASIC SERVICES PROVIDED BY CRIME LABS:PHYSICAL SCIENCE UNIT

• Applies principles and techniques of chemistry, physics, and geology to ID and compare crime scene evidence

• Test drugs, glass, paint, explosives, and soil

BIOLOGY UNIT

• Staffed with Biologists and Biochemists who identify and perform DNA profiling on dried bloodstains and other body fluids

• Compare hair, fibers, wood, plants, etc

FIREARMS UNIT

• Examines firearms, discharged bullets, cartridge cases, shotgun shells, and ammunition of all types

• Garments and other object are tested for residues

DOCUMENTATION EXAMINATION UNIT

• Study the handwriting and typewriting on questioned documents to ascertain authenticity and/or source

• Analyze paper and ink, and even writing impressions on blank paper

PHOTOGRAPHY UNIT

• Examines and records physical evidence using digital imaging, infrared, ultraviolet, and X-ray photography to make invisible info visible

• Also produces photo exhibits for courtroom

OPTIONAL SERVICES:TOXICOLOGY

• Examines bodily fluids and organs to determine the presence or absence of drugs and poisons

LATENT FINGERPRINT UNIT

• Processes and examines evidence for latent fingerprints

POLYGRAPH UNIT

• Also known as the “lie detector” , is an important tool of criminal investigators

• Handled by people trained in the techniques of criminal investigation and interrogation

VOICEPRINT ANALYSIS UNIT

• Ties the voice to a particular suspect in cases involving telephone threats or tape recorded messages

• Use the sound spectrograph-transforms speech into a voice print

CRIME SCENE INVESTIGATION UNIT

• Dispatches specially trained civilian/ police to the crime scene to collect and preserve physical evidence that will be later processed in a crime lab

OTHER SPECIAL SERVICES:FORENSIC PSYCHIATRY

• Examines the relationship between human behavior and legal proceedings

• Determine if defendants are competent

FORENSIC ODONTOLOGY

• Help identify victims based on dental evidence when the body is left in an unrecognizable state

FORENSIC ENGINEERING

• Concerned with failure analysis, accident reconstruction, and causes and origins of fires or explosions

FORENSIC COMPUTER & DIGITAL ANALYSIS

• Involves identifying, collecting, preserving, and examining information from computers and other digital services (ex. Cell phones)

FORENSIC PATHOLOGY

• Medical examiners or coroners that are involved in the study of medicine as it applies to criminal law

FORENSIC ANTHROPOLOGY

• Concerned primarily with the identification and examination of human skeletal remains

FORENSIC ENTOMOLOGY

• Examines insects and their relation to a crime in order to estimate time of death when circumstances about the crime are unknown

• Insects-blowflies, maggots/fly larvae