CSI Book Flashcards
First an old is federal law enforcement agency in the United States
US Marshal service
The nations first formal investigative branch
US postal inspection service
First policing agency with statewide jurisdiction
Texas rangers
Transient evidence
Evidence that is easily perishable or destroyed should be look for first
Principal and lead investigators
Principal investigators do all the legwork, and the lead investigator is more of a supervisor role
Crime scene, logistics map consist of
The core, the inner area in the outer area
Peripheral crime scene also known as
The inner area
The Birdseye perspective a.k.a. exploded crime scene sketch is used for
Ground level perspective.
Provides a two dimensional view, looking directly down from above
Elevated crime, scene, sketches provide
Provide two dimensional side view of a particular location
Example bullet holes are blood stains on the walls or other vertically oriented surfaces
Evidence that is undetectable with the unaided eye, and usually visualized using some type of specialize lighting, and or magnification device
Trace evidence
Any object causes an image of itself by penetrating another object or surface area qualifies as a form of
Impression evidence
Class characteristics
What individual pieces of evidence have in common
Individual characteristics
Allow a specific piece of evidence to be identified as originating from a specific person place or thing
In regards to identification how many pieces of class evidence an individual evidence is required
At least two pieces of class evidence in one piece of individual evidence
Every contact leaves a trace and is deceptively simple is known as
Lochard’s exchange principle
Arches
Rolling Hills
5% of the population in most prevalent among African-Americans
Loops
65% of the population in most prevalent among Caucasian individuals
Whorls
Includes 35% of the population in most prevalent among Asian Latinos and Native American
The most common type of print at crime scenes
Latent prints, and are not visible to the unaided eye
Vapor created by heating iodine crystals is absorbed by the oils and other constituents of latent print
Iodine fuming
This chemical developer reacts with the traces of amino acids contained in perspiration and causes a latent print to turn a bluish purple color in approximately 2 to 3 hours
Ninhydrin
If an attempt to develop a print with Ninhydrin should fill this can be used
Silver nitrate
Order of application for chemical developers
- Iodine fuming is used first.
Silver nitrate or superglue fuming should be applied last because after it’s use latent print, will not easily be developed by other methods
Solution capable of developing prints on wet surfaces
Small particle reagent
Applying this chemical to non-porous or waxy, greasy metal or glass surfaces, milk, cartons, or interior of latex gloves and candles produce a black print
Sudan black
Chemical for developing prints on bloody surfaces
Leuco crystal violet
Luminol
Fluorescein
Acid fushsin
Sticky surface print development
Sticky side powder
Crystal violet
Skin surface prints
Iodine fuming
Super glue fuming
Amido black
Gunshot residue
Within 3 feet and within three hours
Over six hours will no longer be a value in laboratory analysis
Striation marks
Striation marks are negative impressions on the barrels surface, and then result in positive impressions on a bullet, after its been fired
Chemical apply to suspected evidence that can show blood is known as
Chromogen
Luminol and fluorescien
Luminol only last a matter of minutes. Fluorescien last hours
Pale blue
Bite marks should be photographed within
Eight hours
Criminal events that are extremely shocking or unexpected to the witness may cause was known as a
Flashbulb memory
________ assumes that certain involuntary verbal reactions from suspects as well as body and I’ve movements can be used to identify one suspects are being deceptive during an interrogation session.
Neuro linguistic programming
Neurolinguistic programming has three modalities
Visual, auditory and kinesthetic
NLP percentages
45 to 60% visual
20 to 45% auditory
10 to 15% kinesthetic
Hypnosis not admissible in court… which case?
People V Shirley
Pin trap devices allow for __ days of continued surveillance activities.
60
Intelligence used to identify and solve an immediate crime or security problem
Tactical intelligence
Developing a long-term big picture of a particular crime. Problem is the primary goal of this intelligence method.
Strategic intelligence
Gathering information derived from nonspecific pieces of evidence that may lead to the discovery of new forms of evidence
Evidential intelligence
This method of intelligence focuses on specific large scale, criminal activities over an extended period of time. For purposes of identifying and gathering more detailed intelligence on specific criminal activities, offenders in their targets.
Operational intelligence
Besides, blood DNA can be extracted from tissues, or other sources containing cells. The most frequent sources are ______.
Epithelial tissues, located within the mucus membrane
Most common method of DNA testing
PCR (polymerase chain reaction)
Mass murder =
4 or more murders at once, same location
Spree murder
Single homicide at multiple locations. No cooling off period
Serial murder
3 or more murders
Cooling off yes
3 or more locations
____ can appear in as little as 1 hour after death but is usually present in 3.
Corneal clouding
Discoloration of the skin after death
Livor mortis (lividity)
Algor mortis
Cooling of the body
12 hrs
1.5-2 degrees per hr
External decomposition of bodies, soft tissue is referred to as
Putrefaction
Begins approximately 36 hours after death
Approximately _______ percent of all burglaries are non residential.
30%
The first appearance by the defendant, and or the attorney, and the trial process is called
The arraignment
Evidence that tends to clear a defendant from any wrongdoing and ultimately leads to the dismissal of that specific charge is called
Exculpatory evidence
_______ is the term used to describe the actions of proving each legal claim in the indictment.
 Case in chief
Judicial notice
If the judge takes judicial notice of a fact, the factors assumed true and admitted, as evidence judges, take judicial notice of fax commonly known in the jurisdiction where the trial is held and are easily determined, and verified from a reliable source.
An agreement between the parties that certain fax exist in or not, and dispute is called
Stipulations
