Crime Scene Investigation IAI Exam Questions
And Answers |Latest 2025 | Guaranteed Pass.
Final analysis is done where? - Answer✔In the courtroom
Major Goals of a Crime Scene Search - Answer✔* The recongnition and identification of
physical evidence
* The collection and proper preservation of the evidence
* Reconstrutction of the crime
* To assist detectives in forming a theory about the crime
The job of the CSI in "forensic science" - Answer✔Is to properly recongnize, identify, collect,
and preserve those pieces of evidence that begin the process known as justice.
CSIs are responsible for what two of the four steps in the admissiblity of phiysical evidence for
court? - Answer✔recognition and collection
Physical evidence leads to the linkage of... - Answer✔the victim, perpetrator and the scene
Four Major Factors that Determine the Value of Physical Evidence - Answer✔Recognition-the
CSI must have the knowledge and understanding to recongnize potential items of physical
evidence located at the crime scene
Collection-Utilizing the appropriate skills and following accepted protocols to gather and
preserve the physical evidence
Testing Procedures-Application of acceptable scientific procedures to analyze the physical
evidence
Courtroom Presentation-Qualifications of the witnesses to provide objective reports on the
forensic analysis of the evidence
Forensic Archeologist - Answer✔Utilizes archaeological recovery techniques at scenes of mass
graves or exhumations
Forensic Botanist - Answer✔Can aid in determining time since death or assist in placing a
suspect or victim at a location by studying the anatomy of plant evenidence
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Forensic Entomologist - Answer✔Can evaluate the life cycle of insects found at the scene or on
the body of a victim to assist in establishing investigative leads such as the movement of a body
after death, manner of death, and the postmortem interval
Forensic Odontologist - Answer✔Dentist with special training in the evaluation and handling of
dental evidence, including bitemark comparison and the identification of victims/suspects
Forensic Pathologist - Answer✔A medical doctor with additional specialty training in
determination of injuries and disease that cause death
Medical Examiner - Answer✔A medical doctor with five or more years of specialized training in
recognition of the cause and manner of death
Coroner - Answer✔An eleted or appointed official who conducts death investigations. the
coroner is not required to have a medical background and his/her duties are dictated by
jurisdiction.
FSAB - Answer✔Forensic Specialties Accreditation Board- provides accreditation to those
certifying bodies that meet stringent requirements for training, education, experience, and
testing of individual forensic scientist and specialist.
the duty of the expert witness is to - Answer✔educate the jury and provide testimony using
terminology that is easily explainable and not misunderstood.
Essential elements of exper witness testimony - Answer✔Clarity, simplicity, and honesty
expert witness testimony may be challenged in the following ways: - Answer✔*the case may
not require the expertise
*Basic qualifications and ability to give an opinion in the field at issue
*Insufficient education or experience to have anything of value to offer (no vaule added)
*the methodology utilized to support the opinion may not be scientifically sound or capable of
supporting the profered opinion
*The methodology may be scientifically sound, but the opinion based on the method is not
sufficiently derived from that scientific methodology
Acts of commission - Answer✔Intentional
Acts of omission - Answer✔unintentional
O.J. effect - Answer✔discrediting the chain of evidence, the scientists, or the science is known
as the OJ effect and has become a key defense technique
Physical evidence is valuable in many aspects and can reveal data that will aid the investigation
by: - Answer✔*Providing essential information on the facts of the case-corpus delicti
*Revealing the modus operandi (MO)-the preferred method of operation
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*Demonstrating linkages between the vicitm, suspects, locations, and objects
*Proving or disproving witeness statements
*Identifying a suspect through DNA or other individualization
*Classifying unknown substances
*Reconstructing the crime scene-how a crime was committed
*Developing investigative leads
Corpus delicti - Answer✔facts of the case
MO-Modus Operandi - Answer✔the preferred method of operation
Class characteristics - Answer✔physical evidence that cannot be related to a common origin
with a high degree of certainty, therefore it can only be associated with a group and never a
single source
Indivdual characteristics - Answer✔are distinct differences in the physical evidence that allow it
to be associated with a single source and allow the examiner to determine the uniqueness of
any single object or piece of evidence
Associative evidence - Answer✔items of physical evidence located during a crime scene search
can be used to demonstrate linkage or to "associate" the victim to the suspect or to a particular
location
What ammendment protects against unreasonable search and seizure - Answer✔Fourth
amedment
Mincey v. Arizona - Answer✔dictated what actions law enforcement personnel are authorized
to take without first obtaining a warrant
Items that can be obtained without obtaining a warrant - Answer✔1. Seach the scene for
rictims and render aid in areas where a victim could resonably be found
2. Enter the scene to search for perpetrators (only in areas where a suspect could be located)
3.While officers are legally in a location performing either of the two aforementioned actions,
they may swize items of evidentiary nature that are in plain view-however, this should only
occur in exigent circumstances, such as an unsecured weapon
Transient evidence - Answer✔is defined as physical evidence that may be lost forever if not
immediately preserved
Fruit of the poisonous tree - Answer✔If the physical evidence is tainted then any subsequent
information derived from that evidence would also be tainted
Frye v. United States - Answer✔rejected the admission of a polygraph test on the basis that the
reliability of the intrument had not been proven.
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