Crime Scene Procedures Test Study Guide PDF

**Crime Scene Procedures Test Study Guide** **-What determines how evidence is packaged** The nature of the evidence **-Know the examples of evidence that need to be packaged in a particular way** Blood stained: Non airtight container Charred Debris (arson/explosion): airtight containers **-Wh...

**Crime Scene Procedures Test Study Guide** **-What determines how evidence is packaged** The nature of the evidence **-Know the examples of evidence that need to be packaged in a particular way** Blood stained: Non airtight container Charred Debris (arson/explosion): airtight containers **-What is a chain of custody, why is it so important and whose responsibility is it to maintain** A written record of all the people who have had possession of an item of evidence it is important because it can be attacked by the defense attorneys Everybody who comes in contact with the evidence is responsible **-What is lab analysis of evidence dependent upon when it comes to evidence collection** It is dependent upon properly packaged evidence **-Know the steps that should be taken at crime scenes in proper order** 1. 2. 3. 4. 5. **ADAPT** **-Know what types of containers are an example of what can and can not be used to collect evidence** Forceps, Plastic pill bottles, manilla envelopes **CANNOT USE REGULAR MAILING ENVELOPES** **-Know the methods of documenting crime scenes** Notes, Photography, sketches **-How is access to crime scenes limited?** Its limited by perimeters and a record of who comes and goes from the crime scene **-How should photos be taken and what is the most important prerequisite prior to photographing a scene** The crime scene should be in an unaltered condition, whole area photos (wide overall shot), then work towards the evidence **-Know the sketching procedure, what should be included in a sketch and what type is done at the scene and afterwards as well** Include date, time, scale, location, reference points, distance measurements, names of investigators, and a key, rough sketch at the scene; finished picture at a later date **-Why are reference samples important** Because we need to compare crime scene evidence/ individualize crime scene evidence **-There will be questions on the cases we discussed during this topic mainly focusing on what was done wrong in each case** Jon Bounet, OJ simpson; what was wrong in each case OJ Simpson: The cops walked all over evidence, put blood in plastic bags, They didn't change the gloves, Jon Bounet: Did not secure the crime scene, did not do a good search of the scene **-Know what search methods should be used in different situations** Line or strip method, Grid Method, Zone method, Spiral method **Principles that drive forensics: Locard's Principle, Individuality**