This document discusses different types of evidence that can be used in criminal cases. It summarizes the two main types of evidence as testimonial evidence, which includes witness statements, and physical evidence, which refers to tangible items found at a crime scene. It then provides more details on various sub-categories of physical evidence such as trace evidence, transient evidence, and class evidence. The document also mentions Locard's exchange principle which states that contact between items will result in an exchange of trace evidence.

1. All About Evidence Dairon Caro Robert Garcia Denise Perez

3. It can be divided into two general goods:Testimonial Evidence Physical Evidence Evidence

4. Testimonial Evidence Statement made under oath It’s said in court by a competent witness. Also called direct evidence

5. Important factors to take in account with eye witness Type of crime & how witness saw it. Memory (ability to remember characteristics. Ex: hair, color, sex, age height, reliving event, if their was a presence of weapons.) Interviewing techniques (open ended questions) Relationship of witness to suspect How much time has passed between offense and id. If the witness id the defendant. ***** Most known cases of an innocent person being convicted has happened due to a mistaken eye witness.

6. The Innocence Project National Organization dedicated to exonerating wrongfully convicted people through DNA evidence. Number 1 cause of wrongfully convictions nationwide is because of eye witness misidentification.

7. Jeffrey Dahmer Case

8. Physical Evidence Tangible tend to prove or disapprove a fact Real evidence Refers to any item that would be present at the crime scene on the victims out found in a suspects possession. more reliable than testimonial evidence Can be any material or object in any shape, size, form.

9. Physical Evidence Types of Physical Evidence: Trace Evidence Transient Evidence Conditional Evidence Indirect Evidence Individual Evidence Class Evidence

12. The Locard Principle Locard's Exchange Principle states that with contact between two items, there will always be an exchange. This is the basis of trace evidence collection at a crime scene. “Every contact leaves a trace”

13. Probability and Class Evidence Activity Today in school, a student was seen from far vandalizing a hallway in the 3rd building. The person was wearing a black shirt, khaki pants, black shoes and had brown hair. How can we figure out who the student was or how to narrow the pool of suspects?

14. Packaging Evidence

15. Activity Time!!!

16. THE END!