Vocab Flashcards
Optimum value
Greatest value for solving crime when: ➡️evidence collected properly ➡️know labs strengths and weaknesses ➡️chain of custody not broken ➡️science begins at scene
Polygraph
Lie detector
No longer considered admissible in any court as evidence - can be trained to trick system
*can be used to assist in investigation, but not in court
Locard exchange principle
Whenever two objects come in contact with eachother , there is an exchange of materials between them
Frye standard
“Can’t do it on the frye “
1923 federal case
Frye vs USA
hypothesis used to make a deduction must be scientifically established to have general acceptance
Civil case
Determine competency in terms of preparing wills, settling property, or refusing medical treatment
Forensic odentology
Characteristics of teeth and their alignment and overall structure of mouth
➡️provide individual evidence for identifying specific person
Criminal case
Evaluate behavioral disorders and determine whether people are competent to stand trial
*also examine behavioral patterns of criminals as aid to developing suspect behavioral profiles
DNA
Has more influence than any other form of evidence
200,000-300,000 convicted felons in DNA database
540,000 in evidence still to be analyzed
Forensic computer and digital analysis
Involves identification, collection, preservation and examination of info derived from computers and other digital services
Physical evidence
Key to labs success
All objects that can establish:
➡️crime
➡️link suspect/victim to scene
Anthropometry
Systematic procedure of taking a series of body measurements as a means of distinguishing one individual from another
CSI effect
Dramatization of forensic science on TV led to public belief that every crime scene yields forensic evidence
Produces unrealistic expectation that prosecutors case should be bolstered and supported by forensic evidence
Forensic science
Application of science to law - knowledge and technology of science to the definition and enforcement of the law
Criminal and civil law
Expert witness
Individual whom the court determines to possess knowledge relevant to the trial that is not expected of the average layperson
Forensic engineering
Concerned with failure analysis, accident reconstruction, and causes and origins of fires or explosions