Evidence/Eyewitnesses
Name evidence with individual characteristics.
Name evidence with class characteristics.
DNA
Blood type
Name two pieces of evidence with class characteristics from this case.
Blue fibers, blonde hair, type O+ blood
Which S is first, and most important?
Secure the crime scene
The application of science to legal matters is
Forensic Science
Shoe print (worn down shoe)
Name two pieces of individual evidence from this case
TOOTH
Serial number on chainsaw
Which two S's are important for documenting the crime scene?
Snap and Sketch
Evidence that can imply guilt, but not prove it is called
Circumstantial Evidence
Which type of lineup is best? (sequential or simultaneous)
Sequential
Name two examples of direct evidence from this case.
Snow plow driver's testimony
Detective's photos of Richard with another woman
In which step is the chain of custody used?
Secure the evidence
To free from wrongful conviction
Exonerate
Give an example of an estimator and a system variable.
Estimator - stress, poor vision
System - type of lineup, feedback from officer
Which important evidence proved someone was dead?
Skull fragments at crime scene - proved someone could not survive
Name at least 3 S's that weren't followed in the JonBenet case.
Secure the scene
Separate witnesses
Secure the evidence
A lineup where each photo or individual is shown one at a time
Sequential
Explain a double blind lineup.
The officer running the lineup is not assigned to the case/doesn't know who the suspect is.
The eyewitness is told this to not look for feedback from the officer.
Name one example of trace evidence from this case.
Striations on bone fragments (matched to woodchipper)
Bloodstains on mattress (from blunt-force trauma)
Hair in chainsaw blades
Name the Seven S's
Secure the Scene, Separate Witnesses, Scan Scene, Snap Scene, Sketch, Search, Secure the evidence
What is Locard's Principal?
Every contact leaves a trace