JIBC Investigation and Evidence Collection 3

Question 1

What is 'locard's exchange principle' and how does it apply to crime scene investigation?

Accepted Answer

Every contact between two objects leaves a trace on both

Answer

Locard's Exchange Principle states that whenever two objects contact each other, material is exchanged between them, forming the basis of trace evidence collection.

Question 2

Which method is most appropriate for preserving a footwear impression found in soft soil?

Accepted Answer

Casting the impression with dental stone or plaster

Answer

Casting with dental stone or plaster creates a three-dimensional permanent record of a footwear impression that can be analyzed and compared.

Question 3

During a vehicle stop investigation, an officer observes contraband in plain view through the window. This is known as:

Accepted Answer

The plain view doctrine

Answer

The plain view doctrine allows officers to seize evidence without a warrant when they are lawfully present and the incriminating nature of the item is immediately apparent.

Question 4

What is a 'field notes contamination' risk during an investigation?

Accepted Answer

Writing facts after hearing other witnesses' accounts

Answer

Recording observations after hearing others' accounts risks contaminating an officer's independent recollection with information from other sources.

Question 5

In the context of interviewing suspects, what is the 'PEACE' model primarily used for?

Accepted Answer

A structured framework for ethical investigative interviewing

Answer

The PEACE model (Preparation, Engage, Account, Closure, Evaluate) provides a structured, ethical framework for investigative interviewing without coercion.

JIBC - Justice Institute of British Columbia Practice Test

JIBC - Justice Institute of British Columbia Practice Test

JIBC Investigation and Evidence Collection 3