Classic UX Design Laws to Master
+ Prevent visitors from leaving with Hicks Law
+ Learn to design for conversion with the Von Restorff Effect
+ Minimize errors with Fitts Law
Von Restorff Effect
Predicts that when multiple similar objects are present, the one that differs from the rest is most likely to be remembered. Also known as The Isolation Effect.
For any system there is a certain amount of complexity which cannot be reduced. Also known as The Law of Conservation of Complexity.
Serial Position Effect
Users have a propensity to best remember the first and last items in a series. This principle can be used in a variety of disciplines from page design to copywriting.
Any task will inflate until all of the available time is spent. In other words, "work expands so as to fill the time available for its completion".
The average person can only keep 7 (plus or minus 2) items in their working memory. As a UX designer, focus on controlling what users will remember.
Law of Proximity
A user or website visitor will more closely associate objects close to each other than when objects are spaced far apart. In other words, "Objects that are near, or proximate to each other, tend to be grouped together."
Law of Pragnanz
Users perceive and interpret ambiguous or complex images in their simplest form because it is the interpretation that requires the least cognitive effort.
Users spend most of their time on other sites and so prefer your site to work the same way as the other sites they know. Don't reinvent the wheel.
The time it takes to make a decision increases with the number and complexity of choices. Numerous studies confirm that fewer choices lead to higher interaction.
The time to acquire a target is a function of the distance to and size of the target. In very specific UX design terms,the smaller the size of the button, icon or any other interface element, and the further it is from the cursor, the more time and effort users need to click on it.