Shiftwork: Models, Stress, and Air Traffic Control

1
Shiftwork Models, Stress, and Air Traffic
Control

• Louise Kreider

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Models, Stress Safety

• Taylor, Briner Folkard, 1997.
• Examined different models of shiftwork and stress
• Luna, 1997.
• Reviewed shiftwork factors that may affect air
  traffic control
• Stoynev Minkova, 1998.
• Studied circadian rhythms of air traffic
  controllers

3
Early Shiftwork Models

• Stimulus-response linearity
• Circadian disturbance gt stress gt illness
• No consideration of human adaptability
• Insufficient to explain or predict performance

4
Later Shiftwork Models

• More recent move to transactional models
• Multi-directional interaction of multiple human
  and non-human factors
• Concept of stress still used in many models
• Stress still poorly defined

5
Stress as a Concept

• In terms of researchStimulus, response or
  transaction?
• In terms of the humanPhysiological,
  psychological, or social?

6
Other Concepts

• Coping
• Appraisal
• Fatigue
• Morningness
• Personality
• Flexibility

7
Issues with Shiftwork Models

• Tend to be predominately hypothetical
• Should be seen as guides to research, not
  descriptions of data.
• Often based on research with poor methodology.

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Rutenfrantz model
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Haider, et. al. model