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Human Factors

Human Factors. Physiological Aspects Psychological Aspects Human Interface with World of Work. Physiological Aspects of Human Performance. Physical structure of skeleton, muscles, nervous system, and metabolic processes Bones-spine and upper and lower

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Human Factors

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  1. Human Factors Physiological Aspects Psychological Aspects Human Interface with World of Work

  2. Physiological Aspects of Human Performance • Physical structure of skeleton, muscles, nervous system, and metabolic processes • Bones-spine and upper and lower • Connected at body joints, wrist, knee etc • Joints connected by ligaments • Muscles contract and move bones • Expend energy to move • Biomechanics of motion

  3. Psychological Aspects of Human Activities • What motivates people? • Do people like being idle? • Americans want “job enrichment”? • Who has the best ideas on how to increase productivity? • What makes people more positive at work?

  4. Psychological Aspects of Human Activities • People are still motivated by money • People would rather be doing productive work than be idle • Many workers do not necessarily want “job enrichment” • Workers often have the best ideas on how to increase productivity if only asked • Most people respond ++ when they know objectives, what their jobs are, that they will be treated fairly, consistently and with respect

  5. Human Interface with Work • Important interfaces • Work Environment • Social Structures • Machines • Information/Communication Systems • Organizational/Supervisory Structure • Robots/”Intelligent Machines”

  6. Interface with Work Environment • IE’s design workplaces • Optimal location for devices • Illumination • Atmosphere • Safe and Attractive

  7. Interface with Machines • Human serves a control function • Human factors data used to select size, shape and location of controls • Humans are better at: • Recognizing…. • Storing…. • Other words….

  8. What are we better at? • Recognizing complex patterns • Recognizing unusual/unexpected events • Storing lots of info, long time, strategies • Quick retrieval, associating, inferring • Adapting the decision process • Reasoning inductively • Discerning most important activities

  9. What are machines better at? • Monitoring prespecified events • Storing quantitative data quickly (lots) • Retrieving and processing data quickly • Performing repetitive activities • Responding to inputs consistently, fast • Ignoring distractions

  10. Interface with Information/Communication Systems – One portion • Auditory vs. Visual Presentation • Auditory • Message short, simple • Not referred to later • Deals with events in time • Calls for immediate action • Visual system overburdened • Too bright, have to move a lot

  11. More Interface: Auditory or Visual • Visual • Message is complex and long • Referred to later • Deals with location in space • Does not call for immediate action • Auditory system overburdened • Location is noisy, worker in one position

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