1. Expectancy Violations Theory (EVT)
Presentation Technologies
Sidney Evans

2. Communication Reward Valence
Space Relations
Assumptions of EVT
Arousal
Threat Threshold
Violation Valence
Communication Reward Valence

3. SPACE RELATIONS
12 ft. +
0-18 in.
18 in. – 4 ft.
4 -12 ft.

4. Expectancy Violations Assumptions
Expectancies drive human interaction.
People make predictions about non verbal behavior.
Expectancies for human behavior are learned.

5. U O S A R
Cognitive
Physical A L
Increased interest or attention when deviations from expectations occur.

6. THREAT THRESHOLD
Distance at which an interactant experiences physical and physiological discomfort

7. Perceived positive or negative assessment of an unexpected behavior
VIOLATION VALENCE
Perceived positive or negative assessment of an unexpected behavior

8. Communicator Reward Valence
Positive and negative characteristics of a person
Potential for him/her to carry out rewards or punishments
Communicator Reward Valence

9. Communication Reward Valence
Space Relations
Assumptions of EVT
Arousal
Threat Threshold
Violation Valence
Communication Reward Valence

10. Expectancy Violations Theory (EVT)
Presentation Technologies
Sidney Evans