Cognitive Load
01 Definition
Cognitive Load meaning: The mental effort a person needs to understand and use an interface.
Cognitive load is how much thinking a task demands from working memory. When a page has too much information, jargon, or choices at once, load rises and users struggle or quit. Clear layout, plain wording, and grouping related items lower the burden and make actions easier to complete.
Why it matters
How Cognitive Load fits the work
Keeping mental effort low helps visitors process a page quickly, so they can act without feeling overwhelmed or confused.
In context
Splitting a dense signup screen into labeled sections lowered cognitive load and helped more users reach the final step.
Practical note
Working memory is limited, so hiding advanced options and revealing detail progressively often works better than showing everything at once.