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Unit 1- Human Factors and Ergonomics (Psychological factors (Examples…

- - - - Reduce stress and fatigue on people, as they will be able to do things faster,
        more easily, more safely and make fewer mistakes (reduce errors)
      - Increase safety
      - Increase ease of use
      - Enhance operational comfort
      - Improve system performance, reliability and maintenance
    - - It can be seen as the minimum distance required to, enable the user group into or through an area. This is especially important when designing emergency exits and safety hatches.
    - - Also known as the workspace envelope. A 'workspace envelope' is a 3-dimensional space within which you carry out physical work activities when you are at a fixed location. Workspace envelopes should be designed for the 5th percentile of the user population, which means that 95% of users will be able to reach everything placed within the envelope.
  - - - Measurements taken while the subject is in a fixed or standard position, e.g. height, arm length.
        Static data is much easier to gather, as people are asked to remain still while measurements are taken.
    - - Measurements taken during physical activities, e.g. crawling height, overhead reach and a range of upper body movements.
        Dynamic data involves people carrying out tasks. People carry out tasks in many different ways. While static data is more reliable, dynamic data is often more useful.
    - - Sliding Callipers
      - Cloth tape
      - Sitting height meters
      - Stadiometer
- - - - A simple representation of a human information-processing system.
        
        Possible breakdown examples:
        
        ● Age, skills level, disability, infirmity or frailty
        ● Young children may not have the size, strength, fine motor control or skill to
        perform the tasks.
        ● Older people may not have the strength
        ● People ith disabilities, such as arthritis or Parkinson s disease, may also not
        have the fine motor control required.
        ● A physical condition which can include ALS: Amyotrophic lateral sclerosis, MS:
        Multiple Sclerosis, Arthritis, Partial paralysis, Parkinson’s disease, Repetitive Strain injury, Blindness, Hearing, Reduced sense of feeling
  - - - These may affect
        
        hearing
        
        vision
        
        general comfort
        
        health