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UX facts & stats

7 fact-checked facts about user experience design, each with the reason behind it. 5 more are in today's round and join this page after it closes.

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The basics

What does UX stand for?

AnswerUser experience

UX stands for user experience: how a person feels and fares when using a product.

In UX design, what is a wireframe?

AnswerA simple layout sketch showing a screen's structure

Wireframes are low-detail blueprints that show layout and structure before visual design.

Going deeper

What does Fitts's law predict?

AnswerTime to reach a target depends on its size and distance

Fitts's law says larger and closer targets are faster to point at, which is why key buttons are made big.

What does WCAG stand for?

AnswerWeb Content Accessibility Guidelines

WCAG are the W3C's guidelines for making web content accessible to people with disabilities.

What is an A/B test?

AnswerComparing two versions to see which performs better

In an A/B test, users are split between two versions so their results can be compared.

Expert level

Under WCAG level AA, what is the minimum contrast ratio for normal-size body text?

Answer4.5:1

WCAG AA requires at least 4.5:1 contrast for normal text; 7:1 is the stricter AAA level.

George Miller's famous 1956 paper put short-term memory span at about how many items?

Answer7, plus or minus 2

Miller's 'The Magical Number Seven, Plus or Minus Two' described limits on how much we hold in mind.

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