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Interaction Laws
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Essentials
Fitts law:
closer and larger targets are faster to hit
Hick law:
more visible choices increase decision time
Serial position:
first and last items are remembered best
Pareto principle:
a small set of features drives most value
Jakob’s law:
users prefer familiar patterns
Checklist
Can you remove one visible choice on this step
Is the primary action inside easy thumb reach on mobile
More reading:
Laws of UX
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