IAI-CSA TECHNIQUES OF CRIME SCENE
INVESTIGATION NEWEST EXAM WITH ACTUAL
QUESTIONS AND CORRECT VERIFIED
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Evidence - (answers)Something legally submitted to a competent trier of fact
as a means of ascertaining the truth of any alleged matter under investigation.
Two Broad Types of Evidence - (answers)1. Testimonial Evidence
2. Real, or Physical Evidence
What is Physical Evidence? - (answers)Any Type of Evidence with an objective
existence, that is anything with size, shape, and dimension.
Physical Evidence may also be considered either - (answers)1. Direct evidence
(evidence that supports a conclusion of fact without inference)
OR
2. Circumstantial evidence (evidence that requires inference to connect it to a
conclusion of fact).
Physical Evidence - (answers)May be more reliable than eyewitnesses to
crimes.
CSI Effect - (answers)Has made jurors expect, even demand, physical evidence.
One Factor making the public's notion of the role of physical evidence -
(answers)Science and technology are perceived by most of the public to be
unbiased and not subject to manipulation.
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Negative Evidence - (answers)the absence of physical evidence. May provide
useful information and even stop defense arguments at the time of trial
Can every item of physical evidence be directly associated to a specific person,
place, or thing and believe that it is possible to link that evidence to a unique
source. - (answers)No
Can Majority of Physical Evidence found at crime scenes be only Classified -
(answers)True
Classification of Evidence - (answers)Meaning physical evidence placed into
groups with all other items having the same properties or class characteristics.
Types of Pattern Evidence - (answers)(fingerprints, firearms evidence, footwear
evidence, tire impressions, and tool marks)
Practitioners would offer a conclusive opinion that the known and questioned
item came from a common source to a reasonable degree of scientific
certainty.
The ability to associate an item of evidence to a sole, unique source is currently
being hotly debated. - (answers)True
What does DNA testing use? - (answers)Statistical occurrence of discrete
pieces of genetic material or alleles.
Can physical evidence that is identified corroborate testimony, place a subject
at a scene, and be useful in a variety of ways as an interrogation tool? -
(answers)Yes
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Chain of Custody - (answers)Proof that evidence collected during an
investigation and the evidence ultimately submitted to the court are one and
the same. To prove that the integrity of the physical evidence has been
maintained. Shows who had contact with the evidence, at what time, under
what circumstances, and what changes, if any, were made to the evidence.
General Rule on collecting evidence - (answers)As much material as is
reasonably possible to collect should be taken. More is better than less.
What is needed for known/exemplar samples for DNA? - (answers)Blood
samples or buccal (cheek) swabs from the victim and suspect are needed.
What is needed for known/reference or exemplar samples for Automobile
Specimens? - (answers)A known sample of paint from the questioned vehicle
must be submitted for comparison.
What is a good practice for packaging small objects? - (answers)Double-wrap
very small objects such as hair, fibers, or glass fragments. These items should
first be folded up in a sheet of paper, such as a pharmacist's fold, and then
placed in an envelope
How should any potential hazard evidence be labeled? - (answers)Labeled with
any potential hazards such as biohazard stickers
Use of Expert Witnesses - (answers)Because scientific principles relating to
physical evidence are often beyond the knowledge of laypeople, courts permit
persons with specialized training and skills to testify in court to explain and
interpret scientific evidence to juries, as well as offer their opinion based on
the evidence. Expert witnesses can be used when the subject of the testimony
is beyond the experience and knowledge of ordinary laypeople.
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What is the deciding factor for potential bias? - (answers)The integrity of the
professional and the organization. All forensic practitioners owe a duty to the
truth.
What is the guidelines for Forensic Labs? - (answers)The American Society of
Crime Laboratory Directors* (ASCLD) has a code of professional practices,
Guidelines for Forensic Laboratory Management Practices (Adopted 1987,
Revised 1994).
Who are often called to court to testify as expert witnesses? -
(answers)Forensic Practitioners
What is important for a witness to know about cross examination? -
(answers)The witness dictates the pace. You do not need to answer any
question yes or no. Explain your rationale.
It is acceptable to say, "I don't believe I am qualified to answer that question."
Do not box yourself into a corner. Beware of questions like, "Have you ever
made a mistake" and "Isn't it possible?"
What is the final element in a crime scene investigation? - (answers)Teamwork.
Who must work cooperatively in a crime scene investigation? - (answers)Each
element of the criminal investigation—uniformed officer, detective, crime
scene specialist, forensic scientist, coroner, forensic pathologist, photographer,
prosecutor, defense attorney, plus all the other vital players in the "system"
IAI - (answers)International Association for Identification