Forensic Evidence Classification Explained

The video tutorial covers the major categories of forensic evidence, which are divided into four main classification schemes: physical vs non-physical, real vs demonstrative, known vs unknown, and individual vs class evidence. Physical evidence includes tangible items like bullets and fingerprints, while non-physical evidence involves intangible items like eyewitness testimony. Real evidence is generated by criminal activity, whereas demonstrative evidence is created for courtroom purposes. Known evidence has a determinable source at the crime scene, while unknown evidence requires lab testing. Individual evidence links to a single source, unlike class evidence, which is common to a group. Understanding these distinctions is crucial for forensic scientists and jury members.

What are the four main classification schemes for forensic evidence?

• Physical vs Non-Physical, Real vs Demonstrative, Known vs Unknown, Individual vs Class

• Tangible vs Non-Tangible, Real vs Demonstrative, Known vs Assumed, Group vs Individual

• Tangible vs Intangible, Real vs Imaginary, Known vs Unknown, Group vs Individual

• Physical vs Imaginary, Real vs Demonstrative, Known vs Assumed, Class vs Individual

Which of the following is an example of non-physical evidence?

• Fingerprint

• Eyewitness testimony

• Blood sample

• Shoe print

What type of evidence is created for courtroom purposes after a crime?

• Non-physical evidence

• Real evidence

• Demonstrative evidence

• Physical evidence

Which of the following is considered real evidence?

• An expert's opinion

• A diagram of the crime scene

• Blood spatter at the crime scene

• A model of the crime scene

What is known evidence?

• Evidence that is created for courtroom purposes

• Evidence that is common to a group of objects

• Evidence whose source is known at the crime scene

• Evidence whose source is determined after lab testing

How is unknown evidence identified?

• Through eyewitness accounts

• By courtroom demonstrations

• By expert testimony

• By laboratory testing

What type of evidence can be linked to a single source?

• Demonstrative evidence

• Class evidence

• Non-physical evidence

• Individual evidence

Which of the following is an example of class evidence?

• Specific wear patterns on a shoe

• DNA sample

• Fingerprint

• Fiber evidence

Why is it important to distinguish between individual and class evidence?

• To create courtroom demonstrations

• To identify the location of the crime

• To determine the type of crime committed

• To link evidence to a single person or object

Which evidence type is crucial for making a difference between conviction and acquittal?

• Class evidence

• Individual evidence

• Demonstrative evidence

• Non-physical evidence