Human Factors

Question 1

State the four main areas of focus when considering human diversity.
Hint DCFO

Answer 1

• Demographic
• Cognitive
• Functional
• Organizational

Question 2

Describe the 5 measures that are considering how we work.

Answer 2

• Productivity:
• Employee Satisfaction:
• Efficiency:
• Work-life Balance:
• Diversity and Inclusion:

Question 3

What is meant by input and output channels?

Answer 3

• Input Channel: A pathway through which data or information is received by a system or device.
• Output Channel: a pathway through which information is transmitted from a system or device to another system or user.

Question 4

State the 5 main human attributes that are considered during user interface development.

Answer 4

physical
cognitive
perceptual
social
cultural

Question 5

With respect to vision describe the following.
* Size and depth
* Colour
* Brightness

Answer 5

Size and Depth: Increasing the size and depth of visual elements can make them easier to see and distinguish for users with low vision or visual impairments.

Color: Using high-contrast color schemes can help users with low vision or color blindness distinguish between different elements on a screen.

Brightness: Adjusting the brightness of a screen can help users with sensitivity to light or glare.

Question 6

With the aid of diagrams give 4 examples that demonstrate the limitations of visual processing.

Question 7

With respect to hearing describe the following.
* Pitch
* Loudness
* Timbre

Question 8

What is the average range of frequencies that the human ear can detect?

Question 9

What aspect of the human ear enables the locating of a specific sound?

Question 10

What aspect of sound limits the ability to filter background noise?

Question 11

Which part of the human body detects touch?

Question 12

State three things that touch allow a human to detect.

Answer 12

Pressure
Temperature
Texture

Question 13

Describe the two-pencil test.

Question 14

With respect to movement describe the following.
* Movement time
* Reaction time
* Accuracy
* Speed and accuracy

Question 15

With respect to memory describe the following.
* Sensory memory
* Short-term memory
* Long-term memory

Answer 15

Sensory memory: This type of memory involves the immediate processing of sensory information, such as what we see or hear. Sensory memory has a very short lifespan, lasting only a few seconds at most, and can hold a limited amount of information.

Short-term memory: This type of memory involves the temporary storage of information that we are actively processing or thinking about. Short-term memory can hold a limited amount of information, typically around 7 +/- 2 items, and has a lifespan of around 20-30 seconds.

Long-term memory: This type of memory involves the storage of information over a longer period of time, ranging from a few minutes to a lifetime. Long-term memory can hold an unlimited amount of information and has a relatively permanent lifespan, although it can decay or be forgotten over time if not retrieved or reinforced.

Question 16

With respect to short-term memory, what is a chunk?

Answer 16

A meaningful grouping or organization of information that can be remembered as a single unit.

Question 17

With respect to long-term memory describe the following.
* Reasoning
* Problem solving
* Skill acquisition
* Errors and mental modes

Answer 17

Reasoning: The process of drawing conclusions or making inferences based on existing knowledge and information stored in long-term memory.

Problem solving: The process of using existing knowledge and information stored in long-term memory to find a solution to a particular problem or challenge.

Skill acquisition: The process of learning and acquiring new skills and abilities, which involves the encoding and storage of information in long-term memory.

Errors and mental modes: Long-term memory can influence the way we approach and solve problems, which can sometimes lead to errors or biases in our thinking. Mental modes are patterns of thinking or cognitive structures that can shape the way we perceive, remember, and interpret information stored in long-term memory.