CDI1

• What is the origin of the word "investigation"?


  Derived from the Latin word "vestigare," meaning "to track or trace."
• What is the primary purpose of an investigation?

  To gather facts and establish truth.
• In which fields is investigation used?


  In law enforcement and other fields and professions.
• What is criminal investigation?


  A collection and analysis of facts about people, places, and things related to a crime.
• What are the three goals of criminal investigation summarized by ILP?


  • Identify the guilty party.
  • Locate the guilty party.
  • Provide the guilty party.
• What does the process of investigation involve?


  A step-by-step examination of the crime and the people involved.
• How is investigation characterized as both an art and a science?

  Art:

  • Dependent on skills, intuition, and chances.
  • "95% perspiration, 3% inspiration, and 2% luck"—Dr. Hans Gross.

  
  

  Science:

  • Involves rules and application of forensic science.
  • Uses forensic science to identify, locate, and evaluate physical evidence.
• What are the three phases of the scientific aspect of investigation?

  Establishing the criminal act, establishing the identity of the perpetrator, and establishing the guilt of the perpetrator.
• What are the two types of criminal investigation?

  • Investigation with the suspect under arrest.
  • Investigation with the suspect at large.
• What does it mean when a suspect is "at large"?


  It means the suspect is nowhere to be found.
• What are the goals of criminal investigation?

  1. Determine if the crime has been committed.
  2. Legally obtain information or evidence.
  3. Identify the persons involved.
  4. Arrest suspects.
  5. Recover stolen property.
  6. Present a strong case to the prosecutor.
• What are the basic elements of criminal investigation?

  1. Recognition: Identifying relevant data.
  2. Collection: Gathering relevant data and facts.
  3. Preservation: Keeping evidence in its original form or preventing contamination.
  4. Evaluation: Determining the probative value of the evidence.
  5. Presentation: Presenting evidence in court.
• What is the Golden Rule of Criminal Investigation?


  “Do not touch, change, or alter anything until it has been identified, measured, and photographed.”
• What are the methods of recording the investigation?


  1. Photographs
  2. Sketching
  3. Written Notes
  4. Lifting fingerprints
  5. Gathering physical evidence
  6. Plaster cast
  7. Tape recording sounds
  8. Video recording objects
  9. Written statements
• What are the three I's in the tools of criminal investigation?

  • Information: Knowledge or facts from a document.
  • Interview and Interrogation: Methods of obtaining information.
  • Instrumentation: Application of tools and instruments in police sciences.