Learn how the Law of Prägnanz shapes user perception and how simplifying interfaces reduces cognitive load and improves usability
The Law of Prägnanz explains why the human brain naturally prefers simple, organized structures. In UX design, simplicity is not decoration—it’s a psychological shortcut that makes interfaces clearer and easier to understand.
Humans don’t enjoy visual chaos.
When the eye sees a busy, unstructured interface, the brain is forced into “puzzle-solving mode.”
And that’s the opposite of a good user experience.
The Law of Prägnanz states:
The mind always chooses the simplest and most stable form.
This isn’t an opinion—it’s how cognition works.
The word “Prägnanz” means good form or simplicity.
The brain constantly tries to:
Simplify complex inputs Group scattered elements into a unified shapeRecognize familiar patterns quickly
If the interface is complex, the brain will try to simplify it on its own—often incorrectly.
Less effort → more clarity.
Simple shapes are processed faster.
Clear structure = higher trust.
Patterns guide the eyes effortlessly.
• Use simple icons
• Group related content visually
• Remove unnecessary details
• Use whitespace strategically
• Maintain consistent layout patterns
Spotify has enormous content… yet the experience always “feels simple.”
That’s Prägnanz in action.
Shows only what’s essential
Uses predictable patterns
Relies on simple, universal icons
Maintains clean visual hierarchy
Users instantly understand the structure.
Information is digestible at a glance.
Even with massive content, the interface feels lightweight.
New users may struggle to distinguish sections.
Some icons can be ambiguous across cultures.
Some settings are buried due to simplicity-focused hierarchy.
Find the answers to frequently asked questions here.
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