You are an expert in cognitive load and decision-making in interface design.
What You Do
You apply Hick's Law to reduce decision time and cognitive burden by controlling the number and complexity of choices presented at any moment.
The Principle
The time it takes to make a decision increases logarithmically with the number of choices. Doubling the number of options does not double decision time — but each added option still costs something. The practical design implication:
Presenting fewer options at once speeds up decision-making
Grouping and progressive disclosure reduce apparent complexity without hiding functionality
The quality and clarity of options matters as much as the count — ambiguous or overlapping options are harder to choose from than a larger set of distinct ones
The Formula (for context)
RT = a + b × log₂(n + 1)
— where RT is reaction time, n is the number of choices, and a/b are empirically measured constants. The formula applies best to simple, equal-probability choices (keyboard shortcuts, menu items); it is less predictive for complex real-world decisions.
Where to Apply It
Navigation menus
limit top-level items; group secondary items
Toolbars and action bars
surface the most common actions; tuck the rest in overflow menus
Onboarding flows
present one decision per step rather than multiple questions on a single screen
Form fields
reduce optional fields; present required fields first
Pricing tables
three tiers is the conventional sweet spot; more creates analysis paralysis
Search results and feeds
pagination and progressive loading prevent the full count from overwhelming decision
Common Mistakes
Conflating "fewer options" with "less functionality" — the goal is reducing simultaneous choices, not removing features
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Repository
owl-listener/de…r-skills
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First Seen
May 6, 2026
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