The Psychology
of Design

106 Cognitive Bias and Principles That Affect UX

Hick's Law

More options leads to harder decisions

HICK'S LAW DEFINITION

Hick's Law predicts that the time and the effort it takes to make a decision, increases with the number of options. The more choices, the more time users take to make their decisions.

HICK'S LAW EXAMPLES

1

In a travel booking app like Airbnb, having too many options can lead to a paradox of choice (and a churn!):

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2

Trello's 3rd signup step has a dropdown with 15 options. That makes it hard to pick one:

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3

Duolingo's list of lessons can sometimes be overwhelming:

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HICK'S LAW CHECKLIST

✔ Find an area where you have a lot of options or a lot of repetitions.

✔ Try to either reduce the number of options or find ways to hide items. (Do they all need to be displayed at once? #progressive disclosure)

✔ If you can't minimize the options, try to put them in an easily skimmable order and make sure the items are familiar; else, it won't work

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