Observations & Perceptions
This type of observation describes properties like color, odor, or texture.
Qualitative
This principle states that every contact leaves a trace
Locard Exchange Principle
Evidence that proves a fact without requiring inference.
Direct evidence
The first step in processing a crime scene.
Secure the scene
This type of witness evidence comes from a person who saw the crime happen.
Eyewitness testimony
This type of observation involves measurements and numbers.
Quantitative
Hair, fiber, or soil are examples of this type of evidence
Trace evidence
Evidence that can be traced to one unique source.
Individual evidence
Witnesses are kept apart during this step.
Separate witness
Eyewitness testimony is often unreliable because of this human factor.
Measuring a bloodstain at 2.5 cm is this type of observation.
Quantitative
What method uses tape to see trace evidence
Lifting
DNA analysis is considered this type of evidence.
Individual
This “S” involves taking photos, sketches, and notes.
See the scene
This nonprofit organization works to free wrongfully convicted people using DNA evidence.
Innocence project
Saying that you thought a person appeared sad is what
Perception
T/F Trace evidence is always visible to the naked eye
False
A red fiber found on a suspect’s jacket is this type of evidence.
This step involves making a picture of the scene
Sketch
What is the most likely reason people are wrongfully convicted
A(n) _____ is a fact and holds up better in court
Observation
Name three types of trace evidence often found at crime scenes.
Hair, fingerprint, blood, etc
Muddy footprints at a crime scene are this type of evidence.
Circumstantial
Evidence found must be collected and __________
Secured
What has helped free people from wrongful convictions?
DNA