Quiz #1 Flashcards
Forensic Scientist (CSI )
analyzing evidence in lab
Prosecution
Arguing the guilt of a suspect based on the evidence
EMT
collecting evidence from the scene of the crime
Forensic pathologist
Determing the cause of death of a victim
Police officer
Securing the scene to preserve evidence
Detective
Interviewing witnesses and persons of interest
Defense
challenge the validity and sufficiency of the prosecution’s evidence.
Objective evidence
that which can be proven through analysis, measurement, observation, and other types of research.
subjective evidence
influenced and is therefore biased
Examples of objective evidence
blood stain and DNA sample
examples of subjective evidence
polygraph results and witnesses memory
what are considered vital signs during a polygraph test
-An increase or decrease in the heart rate compared to the baseline control is an indication of lying
-skin conductivity is an acceptable measurement to use to determine if someone might be lying during a polygraph test
Experimental design
-the independent variable is always manipulated by the experimenter
-the dependent variable is measured in response to the independent variable
-control variables are used to reduce the chance of error in your experiment
what mistakes could a forensic scientist make in a criminal investigation
-Having untrained individuals handling samples.
-Not following protocols for storage or testing of samples.
what mistakes could a prosecution make during a criminal investigation
-Failing to properly secure or preserve the evidence.
-Failing to document the source of evidence.
