User-Centered Design Principles

KISS= acronym for keep it simple stupid. It is best to let simplicity engulfs the system rather than making them complicated.
Consistency
Fitt’s law = there is a connection between length of time with size and distance > efficient placement of an element in any given view with supported by law of proximity
Mental model = defined as someone's thought process about how something works. 
Conditioning principle = when someone is rewarded for an action they take, they will do it again. 
The 80/20 rule 
Proximity
Always put user experience first to create an application that users will appreciate and want to use while still supporting business goals

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