UX Design.

User experience principles for developers. Covers 12 sub-skills.

• UX Design · 1 of 3

  Inclusive & Accessible Design

  WCAG 2.1 AA requires a minimum contrast ratio of what between normal text and its background?

  A1.5:1B10:1C2:1D4.5:1

• UX Design · 2 of 3

  Usability Testing

  When is multivariate testing more appropriate than A/B testing?

  AWhen you need to see how several element changes interact togetherBIt is the more efficient of the two approaches in each case measuredCIt gets by on a smaller audience than the simpler split test needsDThe simpler split test handles several variables at once just as well

• UX Design · 3 of 3

  Design Principles & Heuristics

  In a dense enterprise interface that experts use all day, which property most reduces avoidable confusion?

  ADistinct terminology per feature area to mirror each team's domainBBespoke layouts per screen tuned to that screen's specific dataCMaximal information density so every datum is visible at onceDConsistent visual hierarchy and predictable interaction patterns