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Flashcards in Exam 3 The Description and Identification Process Deck (8):
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EPO 1
Identify the Physical and Psychological Factors that can Influence an Individual's Perception of a Person, Place or Thing

Physical Factors:
Perception: No two persons perceive complex events in the same manner. Improve through Practice and Training and equates to enhanced officer safety
Age
Vision
Hearing
Location (Point of View/Vantage point)
Smell and Taste
Illusion

Psychological Factors:
Group Pressure
Tunnel Vision
Intense Feelings, Emotions, and Attitudes
First Impressions
Previous Experiences
Expectations
Projection
Stereotyping
Personal Interests
Cultural Background
Social Role

1

EPO 2
Identify Investigative Techniques that Aid the LEO in the Description and Identification Process

Victim/Witness Interview
In-Field Identification "show up" (Reasonable Time Frame)****
Physical Lineups
Photographic Lineups
Cameras/Video Cameras
Documentation (written down observations tend to be recalled better)
Biometrics (DNA/Fingerprints)
Neighborhood Canvass
Victim/Witness corroboration

2

Components

Observer: Must be physically present, conscious, and attentive to the event.
Cultural backround
Education
Training
Family
Mental/physical state

Events:
Certain Factors/circumstantial conditions will influence a person's ability to properly perceive an event:
Tattoos, piercings, body art
bright colors
unusual attire

Ambient Conditions: Factors surrounding the event being observed
Weather
Illumination: different lighting can effect how people see things
Background Noises: Sirens, screams, gunfire etc

3

Physical Stress takes place when we place demands on our body-increase heart rate and blood pressure.

Physical Stress(can be difficult to obtain info from victim bc of this)
Does not impact the rational mind as much as psychological stress

Psychological Stress
Perception of stimulus rather than the actual stimulus
Fear of public speaking?
Court Testimony?
Disciplined child waiting on couch for dad to arrive?

Acute Stress(state of emergency)
Vict/Wit placed in terrifying or traumatic event that is sudden, novel or unexpected
Armed Robbery, kidnapping, accident etc
Victims may have impaired cognitive function, and may not be able to provide a description of person or event

4

Certain factors circumstantial conditions will influence a persons ability to properly perceive an event

Bright colors, Exotic or unusual vehicles,
tattoos, piercing, body art
moving objects,
objects out of place
Distant changes in activity level
Provocative or sensual overtones

5

Ambient conditions factors surrounding the event being observed

-Weather
-Illumination
-Background noise/ events

6

When the victim is placed in a terrifying or traumatic event that is sudden, novel, or unexpected, and is of relatively short duration
-State of Emergency (armed robbery, kidnapping, auto accident,
-may have cognitive function, and may not be able to provide a description of person or event

Acute Stress

7

Group pressure

It is very powerful in shaping perception, many will conform to another
point of view
-Fear of being demeaned, judged or rejected

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