Psychological Principles3:05 with Hope Armstrong
There are several laws in Interaction Design. These psychological principles help guide designers to make intuitive user interfaces. We'll look at three popular laws: Hick's, Fitts's, and Tesler's.
- Hick’s Law: The more choices a person is presented with, the longer the person will take to reach a decision.
- Tesler’s Law (aka Law of conservation of complexity): Every application has an inherent amount of complexity that cannot be removed or hidden.
- Fitts’s law: The amount of time required for a person to move a cursor to a target area is a function of the distance to the target divided by the size of the target. Thus, the longer the distance and the smaller the target’s size, the longer it takes.
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