Question

Controls and displays

What are proximity compatibility principles?

What are salience and effort principles?

Answer 1

Proximity compatibility principle is an guideline to use in determining where a display should be located, given its relatedness to other displays. The PCP depends critically on two dimensions of proximity or similarity: perceptual proximity and processing proximity. Perceptual proximity (display proximity) defines how close together two display channels conveying task-related information lie in the user's multidimensional perceptual space (i.e., how similar they are). Thus two sources will be perceptually more similar (in closer proximity) if they are close together, share the same color, use the same physical dimensions (e.g., both use orientation or length), or use the same code (e.g., both are digital or both are analog

Proximity-compatibility principle

Display proximity: how close together in space, or how similar in other attributes (size, shape, color, etc.)

Processing proximity: the extent to which two information sources are used within the same taskoIf a task requires high processing proximity, design for high display proximityoIf a task requires low processing proximity, design for low display proximity.

If two or more sources of information are related to the same task then these sources must be mentally integrated and are defined to have close mental proximity.

2.

Salience is the state or condition of being prominent.The principle of salience has three primary manifestations with respect to omissions. First, it dictates that as a general rule, the legal system should not impose liability for both actions and omissions. categorize people on the basis of what appears initially prominent and obvious about them
• ex: skin color, gender, age

The principal of effort  is the theory that the "one single primary principle  in any human action, including verbal communication, is the expenditure of the least amount ofeffort to accomplish a task

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