UX//Cognitive / Principle
Miller’s
Law//_
.UX/Pr


UX//Cognitive / Principle
Miller’s
Law//
.UX/Pr

Miller’s Law//

Miller’s Law//

Miller’s Law//

Miller 's/Law
Humans can hold 7±2 items in working memory at once.

Miller's Law
Humans can hold 7±2 items in working memory at once.

Miller's Law
Humans can hold 7±2 items in working memory at once.


HOW IT WORKS: Cognitive load increases if too many items are presented simultaneously. Grouping, chunking, or simplifying information helps users process and remember content efficiently.


IN UX/UI/AI DESIGN: UX, UI, and AIX designers structure menus, forms, and content into manageable chunks. AI can dynamically condense or summarize information, reducing memory load.


EXAMPLE: A menu shows 7 primary options with submenus for detail. GenAI chat interfaces present 5–7 options per prompt to avoid overwhelming users.

Miller’s Law
Origin

Origin
Miller’s Law

Miller’s Law
Origin

George A. Miller, in 1956, discovered that the average human’s working memory can handle about 5–9 chunks of information. This finding shaped cognitive psychology, HCI, and information presentation in design.


George A. Miller, in 1956, discovered that the average human’s working memory can handle about 5–9 chunks of information. This finding shaped cognitive psychology, HCI, and information presentation in design.


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