Why Fewer Visible Choices Convert Better (Hick’s Law & Miller’s Law)

Why More Options Slow Decisions, Not Just Confuse Visitors

The number of options in front of someone has a direct effect on how long they take to choose between them, a relationship known as Hick’s Law: the more choices you show someone, the longer they take to decide.

For a website, that means a visitor scanning ten flat navigation items, or a service page listing twelve offerings with no structure, isn’t just taking a bit longer to decide. They’re carrying more Cognitive Load, the mental effort needed to process everything in front of them.

It’s tempting to treat this purely as a copywriting issue that clearer labels will fix. Precise labels help people scan faster, but they don’t reduce the number of options someone still has to weigh up. Every extra item you add, no matter how well-worded, forces the brain to evaluate one more option before taking action.

Why Cutting Content Is Usually the Wrong Fix

Once you know that more choices slows people down, the obvious response is to remove some. The restaurant chains above did exactly that, and it worked. For most other businesses, it won’t, and the difference comes down to what’s actually being cut.

A menu with three near-identical burger variations loses almost nothing when two of them go. A business with twelve distinct services can lose something real when one is removed: unlike a spare menu option, each service is often exactly what a specific visitor came looking for. Trimming the list to look tidier doesn’t change what you do, it just under-represents it, and for specialist or technical businesses, that’s often the detail that would have won the enquiry.

The more useful question isn’t “what can we remove,” it’s “how many of these does someone need to look at, one at a time, before they find what applies to them.” That’s a structural question, not a content one, and it points towards grouping rather than deletion.

The Real Reason Grouping Works

Grouping works because it reduces the number of things a visitor has to decide between at any single moment, without removing anything from the site. Instead of one long list, you’re offering a small number of categories, each of which opens onto a smaller list. That usually means an extra click, moving from a category into the specific item within it, and that’s a reasonable trade: reducing what’s visible at any one time matters more than reducing the number of steps to get there, the same logic behind progressive disclosure.

This is worth doing carefully rather than by feel alone, and here it’s worth being precise rather than repeating the version of this idea that gets passed around most often. The commonly cited guideline is that people can hold “seven, plus or minus two” items in mind at once, usually traced back to psychologist George Miller’s 1956 paper, The Magical Number Seven, Plus or Minus Two. What tends to get left out is that Miller himself later said as much, in a retrospective look back at the paper: the number seven was more of a rhetorical device than a measured limit, used to tie together two loosely related strands of his research for a talk he’d been persuaded into giving. Later work by Nelson Cowan suggested a more careful estimate, closer to four items, once you strip out memory tricks like rehearsal.

None of this is a rule to follow to the letter. It’s a rough, evidence-based ceiling, and a useful one: groups of around three or four tend to be easier to scan and remember than groups of seven or more. You’ve likely relied on something similar without noticing. Even an eleven-digit mobile number, printed as one unbroken string, tends to get broken into smaller spoken groups the moment someone reads it aloud.

The formal name for this kind of work, organising and labelling content so people can find their way through it, is information architecture, one of the core disciplines within UI/UX design. It sits underneath most of what makes a site easy to use, often well before anyone gets to colour or layout.

Applying This to Navigation, Service Pages, and Forms

This is where the theory turns into day-to-day website design work. It shows up in four places most often: navigation, service pages, filtering, and forms.

Navigation

A flat menu with eight or more top-level items asks visitors to compare all of them before choosing. Grouping those into three or four categories, each with its own sub-items, cuts the number of decisions at each step without cutting a single page from the site. Brysk is a straightforward example: several distinct treatments sit under one “Services” entry rather than each getting its own top-level link.

Service and Product Pages

The same logic applies to a services page or a product catalogue, and it’s where grouping pays off most clearly. MV Audio Visual, an Accrington-based audio visual specialist, reorganised roughly twelve service types into three grouped categories as part of a wider website design project, alongside a 3x faster load time and 2x more engagement.

Filtering

For larger catalogues, filtering does the same job as grouping: reducing what’s visible at any one time rather than asking visitors to scan everything at once. Whalley Outdoor used ecommerce filtering this way, contributing to 3x more boot fitting bookings.

Forms

Long forms benefit from the same treatment. Splitting a form into small, labelled sections, such as “Your Details” followed by “Delivery Address,” or breaking it into single-question steps entirely, tends to reduce how effortful the form feels, in the same way that the goal gradient effect affects how far people get through a checkout.

When Grouping Isn’t the Right Fix

This doesn’t mean every site needs restructuring. A business with four services doesn’t need to invent categories for the sake of it, and a single-purpose landing page usually works better as one clear path than as a set of grouped options. Grouping is a fix for too many choices, not a default layout to apply everywhere. Forcing structure onto a page that didn’t need it can add friction of its own, which is the territory covered in Tesler’s Law: complexity doesn’t disappear, it has to go somewhere, and sometimes the simplest option is to leave a short list exactly as it is.