1. STRESS and WORK LOAD Chapter 13 Wickens et al. Environmental stress factors Psychological stress Life stress Overload and underload Sleep loss and interruption

2. Types of STRESS sensomotoric psychological physiological Task efficiency and effectiveness health

3. Environmental stressors movement, vibrations, motion sickness Thermal stress, heat, cold, air humidity, metabolism Air quality, toxic or irritating gases, dust particles of different origin and different sizes (bio-industry, birds, pigs)

4. psychological stress factors Cognitive apparaisal: confidence, over- confidence, carefulness arousal Yerkes-Dodson law Performance changes with overarousal, cognitive tunneling, memory, Speed- Accuracy Tradeoff, strategy changes remediation, simplification, training

5. Over- and underload, sleep loss Work load Measuring work load fatigue Vigilance and underarousal Sleep loss Desynchronisation

6. The DECISION TABLE ab CORRECT REJECTION STATE of the WORLD HITMISS FALSE ALARM A B JUDGMENT of the OBSERVER source observer

7. THE DECISION TABLE The surface area of the cells in the table may be seen as the number of cases in those cells. The size of the ‘a’ and ‘b’ counts reflect the sensitivity of the observer The distribution of the ‘a’ and ‘b’ responses depends on the criterion of the observer, who may vary it. When the observer requires much evidence concerning the event, the criterion is strict

8. THE DECISION TABLE The relative frequency of A and B only depends on the state of the environment; variation is beyond the control of the observer. Shifting the criterion, or changes in the frequencies of external events cause a predictable change in the different categories in the table