forensic criminology Flashcards
forensic criminology
applied use of scientific and criminological research and analytical techniques for the purposes of addressing proactive and reactive investigative work, and for aiding legal cases and issues.
locard’s exchange principle
when two objects come into contact, there is always a transfer of material between them, a criminal will bring something to the crime scene and leave something with it, trace evidence is central to this
logic of forensic criminology
the use of scientific and investigative techniques to aid criminal investigations and provides evidence in court. Crime- evidence(DNA specimen), Collection and analysis- assisting criminal inquiry, police and court decisions-sentence/discharge
common misconceptions
csi effect and hoe they distort the reality of what forensic science actually does, lack of forensic awareness of the public
major techniques
fingerprints, body fluids, bloodstains, DNA, fibre and bullets
trace and traceology
the study of physical traces left at the scene of, or because of, a crime e.g. foot and tyre tracks
bloodstain pattern analysis
critical forensic technique for violent crime scenes, blood follows predictable laws of physics, provides insight into nature of offense, sequence of events, scene disturbances, position of individuals/objects
forensic entomology
the use of insects to solve criminal cases, involves studying the life cycles of insects found on corpses
relevance of forensic science in criminology
it provides important evidence for criminal investigations and prosecutions, forensic criminologists analyse crime scenes
reliability of forensic science
reliability depends on the competence and honesty of the examiners, helps solve crimes and used as evidence in courts for decades, techniques like DNA analysis, fingerprinting, ballistics and toxicology have proven to be generally reliable when properly collected and analysed by trained professionals
limitations
rely on human analysis and judgment which can be subjective, issues of unconscious bias among forensic examiners, contamination of evidence
conclusion
Valuable evidence helps investigation when done well
Potential for misuse means the courts should allow forensic evidence as supporting evidence, not as infallible proof on its own