Types of evidence Flashcards
subjective evidence
evidence that is in the form of an opinion or self-report that cannot be independently examined
objective evidence
based on facts that anyone can observe or measure
examples of objective evidence during criminal investigation
fingerprints, DNA samples, and surveillance footage
examples of subjective evidence during a criminal investigation
Hair analysis
what is the realationship between pulse and respiratation
the more the heart beats the more breathing occurs
how does a polygraph test work
measure physiological arousal factors, including heart rate, blood pressure, respiration, perspiration, and skin conductivity.
what is the purpose of baseline question in a polygraph test
to establish a baseline for your vital signs
how to read and understand the results of a polygraph test when comparing them to a control
The negative values indicate higher reaction on the relevant questions and the positive values indicate higher response on the control questions.
what are the three layers of a hair sample
medulla, cortex, and cuticle
how can fingerprints be used to identify a suspect
fingerprint analysts visually compare the latent print from the crime scene to the fingerprint of a suspect.
how many munitae are determined to find a finger print match
at least 12-15
how can digital evidence be used in a investigation
to investigate any evidence on the persons phone, text messages, email, and photos
