Forensic Science

Classification of Physical Evidence

• Factors not used for classification include elements that do not relate directly to the physical characteristics or behavior of evidence.
• The topic of Classification of Physical Evidences is covered in a specific forensic science module designed to enhance understanding of evidence handling.
• One method for classifying physical evidence is based on the nature and properties of the material from which it originates, such as biological, chemical, or physical sources.

Learning Outcomes

• A key learning outcome from studying this module includes the ability to differentiate types of physical evidence and understand their significance in criminal investigations.

Considerations in Classification

• Classification considers various factors, including the type of material, its origin, and how it relates to the crime scene context.
• The general nature of evidence used in classification involves its ability to link a suspect to a crime or support a case, focusing on its uniqueness and reliability.

Impact of Crime Type

• The classification of physical evidence can vary significantly depending on the type of crime being investigated, affecting what evidence is prioritized and analyzed.
• Workable classification systems are often based on established categories such as trace, transfer, and identification evidence, streamlining forensic analysis.

Contribution of Physical State

• The physical state (solid, liquid, gas) of evidence plays a crucial role in its classification, influencing how it can be collected, analyzed, and interpreted in a forensic context.

Question Types in Crime Resolution

• The types of questions that arise in a crime can help determine the relevant physical evidence needed, guiding investigators in their approach and evidence collection strategies.