The Psychology Principles Every UI/UX Designer Needs to Know

Psychology plays a big part in a user’s experience with an application. By understanding how our designs are perceived, we can make adjustments so that the apps we create are more effective in achieving the goals of the user.

To help you understand the perception of the user, I will introduce some design principles which I think are the most important, and also provide common examples of these principles in practice. Let’s start with the Von Restorff effect:

Von Restorff effect

The Von Restorff effect (also known as the isolation effect) predicts that when multiple similar objects are present, the one that differs from the rest is most likely to be remembered!

Does this ring any bells?

This is the main reason why all call-to-actions (CTAs) look different from the rest of the action buttons on a site or application!

Von Restorff Effect Example

We want users to be able to differentiate between a simple action button and a CTA, in order for them to have a clear understanding what the CTA does, whilst also remembering it throughout their use of the application or site.

“When multiple similar objects are present, the one that differs from the rest is most likely to be remembered!”

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