Mental Workload and Stress
Environmental Stressors
(Separate Lectures)
- Vibration and Motion Sickness
- Thermal Stress
- Air Quality
- Noise
- Glare vs Darkness
Psychological Stressors
Description
Cognitive Appraisal
How you are evaluating a situation
Level of Arousal
Yerkes Dodson Law
- Stress and Performance have an inverted U relationship
- Optimal Stress Level is higher for simple tasks
Yerkes Dodson Law Graph
Performance Changes with Over Arousal
- Perception/Attention Tunneling (Keys in hand)
- Cognitive Tunneling (Remember exam answer after test)
- Working Memory Loss
- Dominant habit prevails
- Shifts to the left along the speed accuracy trade-off curve
Performance and Stress
If you are under stressed, your body will not secrete the hormones sometimes required to work better.
Stress on the body
Stress causes a lot of biochemical changes (Physiological Responses) on the body