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Cognitive load refers to the total mental effort required to use an interface — every decision, every piece of information to process adds to that load.
Why Reducing It Matters
Users have limited mental bandwidth; an interface demanding too much processing at once causes fatigue, errors, and abandonment.
Practical Ways to Reduce It
Breaking complex tasks into smaller steps, using familiar patterns instead of novel ones, and removing unnecessary choices all lower cognitive load.
The Goal: Effortless, Not Impressive
A genuinely well-designed interface often feels almost unremarkable to use — that invisibility is frequently a sign of low cognitive load, not a lack of design effort.
