Download - CSI:Helen a High Crime Scene Investigation
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CSI:Helena High
Crime Scene Investigation
http://www.youtube.com/watch?v=TSe_IkOd4J0
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Ted Bundy-Serial Killer
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Ted Bundy:
Handsome, gregarious
Former law student
40+ murders between 1964-1978
Pacific Northwest California, Idaho, Utah, Colorado, Florida
Victims: young women
Murdered by: blunt instrument and strangulation
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Tallahassee, FL-3 week murder spree killing 2 women at sorority house and a 12 year old girl.
Sorority victim beaten over head with log, raped and strangled. Bite marks on left buttock and breast.
Supremely confident: Bundy represented himself in court as his own lawyer.
Forensic odontologist: matched bite marks on victims buttocks with Bundy’s front teeth.
Convicted.
Executed: 1989.
http://www.youtube.com/watch?v=HxQ1QFUGKqo
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Forensic Science:Is the application of science to the criminal and civil laws that are enforced by police agencies in a criminal justice system.
Criminalistics:The broad term describing the wide range of skills, training, and responsibilities needed in conducting criminal investigations.
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Criminalists: Do Not- carry weapons
interrogate suspects
make arrests
treat injured
Do-
collect evidence
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Fingerprint Examiner
Pathologist
Trace Evidence Examiner
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Pathologist
Anthropologist
Odontologist
Entomologist
Psychologist
Serologist
Mammologist
Physicist
Biologist
Toxicologist
Botanist
Forensic:
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Sir Arthur Conan Doyle
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Sherlock Holmes 7 Rules of Scientific Thinking: (compiled by John C. Sherwood)
1: “One should always look for a possible alternative and provide against it. It is the first rule of criminal investigation."
2: "I never guess. It is a capital mistake to theorize before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts."
3: "Use your time sparingly. Determine what you have. Then determine what you need. Then look for what you need in the place where it must be."
4: “There is nothing so important as trifles. Never trust to general impressions, but concentrate yourself upon details."
5: "Singularity is almost invariably a clue."
6: "It is a mistake to confound strangeness with mystery. The most commonplace crime is often the most mysterious, because it presents no new or special features from which deductions may be drawn."
7: "When you have eliminated the impossible, whatever remains, however improbable, must be the truth."
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http://www.youtube.com/watch?v=ZoPw2SaEq9k
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Qualitative vs Quantitative
EVIDENCE
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Deals with descriptions.
Data can be observed but not measured.
Colors, textures, smells, tastes,
appearance, beauty, etc.
Qualitative → Quality
Qualitative
EvidenceDeals with numbers.
Data which can be measured.
Length, height, area, volume, weight,
speed, time, temperature, humidity, sound
levels, cost, members, ages, etc.
Quantitative → Quantity
Quantitative Evidence
Qualitative data:
robust aroma
frothy
appearance
strong taste
burgundy cup
Quantitative data:
12 ounces of latte
serving temperature 150º F.
serving cup 7 inches in
height
cost $4.95
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Physical Evidence and Faulty Logic“She’s a witch! Burn her!
http://www.youtube.com/watch?v=zrzMhU_4m-g
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Faulty Reasoning:
1.All wooden things burn but not
all things that burn are made of
wood, so a flammable witch can-
not be wooden.
2.Objects that float don’t need to
weigh the same; they merely
need to be less dense than
water. (Be wary of very small
rocks).
Cautionary Tale: Faulty reasoning can sometimes
be introduced into court proceedings as a means of
swaying the jury. Antidote: Physical Evidence
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Alphonse Bertillon (1853-1914) was a French law enforcement officer and biometrics researcher who created anthropometry, an identification system based on physical measurements.
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Anthropometry was the first scientific system police used to identify criminals. Until this time, criminals could only be identified based on eyewitness accounts, which are known to be unreliable. The method was eventually supplanted by fingerprinting but "his other contributions like the mug shot and the systematisation of crime-scene photography remain in place to this day."
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The “MUG SHOT
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Edmond LocardTwentieth century French criminalistics pioneer.
Locard’s Exchange Principle
When two objects come in contact with each other, a cross-transfer of materials occurs.
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Forensic Chemistry
Is a broad term denoting the application of chemical analyses and related principles to the examination of physical evidence such as:
Street drugs Gunshot residue
Arson debris Paint
Fibers Glass
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Appropriate analytical and instrumental techniques are chosen to identify physical characteristics or composition of evidence.
Questions to be resolved include:
Is the substance illegal to possess?
Were these substances use in the process to manufacture illegal drugs?
Were these items in physical contact?
Do the items share a common source?
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BertillonageMaterials: string meter stick
pen unique # card
Anthropometric Measurement sheet
Bertillonage Measurement Diagram
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Procedure:
Using the Anthropometric Measurement Sheet, work with a partner
to get each other measurements and fill out the data.
All measurements must be in centimeters.
Leave the “Unique I.D.” blank.
Upon completion of measurement activity, each student must pick
out a card from the box and get a secret I.D. number.
Fill out the Unique I.D. section on your own Anthropometric Sheet
and write your name on the back of the I.D. card.
Hand in both to instructor.