Being a witness/memory and attention
what can effect the memory of a witness?
Stress and Anxeity
When was DNA fingerprinting first used
1986
What does DNA stand for
deoxyribonucleic acid
What main type of evidence helped get these people free
DNA
What are the 3 hazards at a crime scene-
-bio-hazard chemical hazard and physical hazards
What are the two types of witness?
eye witness and a witness testimony
Who was the zodiac killer
This person was a serial killer who was murdering people in Northern California
What is PCR
PCR is what makes it possible to gather conclusive results from a certain case
Are the eyewitnesses the most reliable source
No they might thing that they are seeing the right before but not remember specific details on how they looked
If you are approaching the crime scene should you Exit and enter the same way
no
What type of memory is used for a eye witness
long term declarative memory
What is the most common crime
assault
What are the two ways to identify a DNA profile of a suspect or victim
inclusion exclusion
When is elimination used in evidence
-elimination is used when when you have DNA of a suspect but have multiple possible suspects
How should you approach a crime scene
you should approach a crime scene based on what information you already have
What can affect your attention?
ADD,ADHD
What is the most advanced field for forensic science
DNA
What are locations for DNA evidence
Bite marks
Tissue
Tape
Hats
Mask
Bed liners
clothes
What is the most common mistake upon witnesses
mistaken eyewitness
Should first responders take off clothings of victims to get to a concern
NO you should always leave it on it can be a piece of evidence
What is the most important type of attention
sustained
What is the most common type of evidence found at a crime scene-
physical evidence
What are sources of evidence
Saliva
Blood
Skin cells
Hair
What is suggestive identification
This is when the witness is told to focus on a specific suspect
What are the 7’s for a crime scene
Securing the scene
Securing and collecting evidence
Separating the witnesses
Sketching the scene
Scanning the scene
Searching for evidence