Human Fatigue Factors
The study of the various human factors which contribute to mishaps is not an exact science. If asked most people could explain what FATIGUE is. But they probably could not recognize many of its symptoms, because of its initial insidious nature.
Also, since CAP members are frequently "go oriented" people who want to accomplish the mission, they often disregard the signs of fatigue (if recognized) and push on. Fatigue is also extremely difficult to pinpoint as a contributing factor in a given mishap.
A number of factors occur in a fatigued state and, although the order may not be exactly the same, the general trend is for the complex and voluntary functions to fail first. This is often the first signal that the body is beginning its withdrawal into a dangerous condition.
FATIGUE FACTORS:
1. Complex voluntary actions deteriorate
2. Poor control of equipment/machinery
3. Poor hand-eye coordination
4. Less voluntary movement of the eyes
5. Falling behind in copying instructions
6. Reaction time slows
7. Economizing of energy expenditure
8. Writing begins to slope downward
9. Less eye movement
10. Eye blinks are longer
11. Use of simpler terms in speech
12. Silent periods increase
13. Slumping in seat
14. Withdrawal from external to internal world
15. Tunneling of vision
16. Putting off tasks that require monitoring
17. Microsleeps increase
18. Rationalizing that dozing for a minute is OK
19. Loss of directional control
20. Minimal voluntary movement
21. Mistaken locational awareness
Remember that bad judgment seems to accompany fatigue, and lead to mishaps. Do not be too shy to suggest that your companion take a break, if you detect the above factors setting in.