Here is a collection of the top 10 UI/UX laws that must be learnt by the UI/UX designers. This collection of 10 UI/UX laws is based on their practical application and impact on the user experience:
Table of Contents
1. Hick’s Law
Hick’s law states that the time it takes for a user to make a decision increases with the number of choices available. It is important because simplifying interfaces by limiting options or grouping them logically can speed up user decision-making. A navigation menu with 5 clear options is faster to navigate than one with 15 scattered options.
2. Fitts’ Law
This law states that the time required to interact with an element depends on its size and distance from the user’s starting point. It is important because making interactive elements like buttons larger and easier to click or tap improves usability, especially on mobile and touchscreens. One such use case is a large, prominent “Submit” button at the bottom of a form that is easier to tap than a small, hard-to-reach one.
3. Jakob’s Law
This law states that the users expect your website or app to work similarly to other platforms they frequently use. It is important because familiarity reduces the learning curve, ensuring users feel comfortable navigating your interface. Like “hamburger” menus for mobile is a standard navigation style to see a sort of menu list.
4. Tesler’s Law (Law of Complexity Conservation)
This law states that every application or system has an inherent complexity that cannot be eliminated, but it can be managed or shifted between the system and the user. It is important because simplifying the interface without removing essential functionalities balances usability and complexity. Such a photo editing app can have an “auto enhance” feature for beginners, but the advanced tools can be kept accessible for the experts.
5. Aesthetic-Usability Effect
This law states that users are more likely to perceive a visually appealing design as easier to use, even if it has minor usability flaws or issues. It is important because first impressions count. An attractive design builds trust, keeps users engaged, and makes them more forgiving of minor issues. You can consider an appealing interface more impressive that uses clean typography and a harmonious colour palette to elevate the design.
6. Pareto Principle (80/20 Rule)
This law states that 80% of the results come from 20% of the inputs. In UI/UX design, most of the value comes from a small set of features or elements. It is important because focusing on the most-used features enhances usability while saving design resources. You can experience this on an e-commerce website where features like “Search,” “Add to Cart,” and “Checkout” are so prominent and highlighted because they drive maximum user actions.
7. Law of Proximity
This law states that grouping related elements makes the interface intuitive and helps users quickly understand relationships. It is important because elements close to each other are perceived as related. Also, proper grouping improves readability, reduces cognitive load, and enhances the user’s ability to scan and comprehend content quickly. Let’s take an example of form labels placed close to their corresponding input fields, making it easier to understand and fill them out.
8. Peak-End Rule
This rule mentions how users judge their experience based on its most intense moments (i.e. peaks) and how it ends, so a positive peak and conclusion are crucial rather than the entire product journey. It is important because a great peak and a satisfying end help users remember their experience positively, increasing engagement and loyalty. You can think of a “Checkout” process on an e-commerce website that ends with a cheerful confirmation page and an estimated delivery date, leaving a positive impression.
9. Law of Consistency
This law states that consistency across designs promotes trust and reduces cognitive load for users. It is important because it helps users predict outcomes, navigate interfaces effortlessly, and feel confident using your product. Consistency can be maintained by designing uniform button styles, colours, and font sizes across all pages.
10. Zeigarnik Effect
The Zeigarnik effect is the behaviour of people who are more likely to remember unfinished tasks than completed ones. Users are encouraged to complete the tasks when they have unfinished ones, which helps in increasing conversions and engagement. The progress bars help users stay engaged, knowing how close they are to completing their purchase.
Conclusion of Top 10 UI/UX Laws
Understanding and applying these laws and rules of UI/UX design can transform a basic interface into an intuitive and delightful experience. These principles can act as a foundation and can help designers align their work with human behaviour, cognitive psychology, and aesthetic preferences.
From simplifying decisions with Hick’s Law to creating memorable interactions through the Peak-End Rule, each law plays a crucial role in enhancing usability and user satisfaction. However, the true magic lies in balancing these laws with creativity and innovation to craft designs that not only solve problems but also leave a lasting impression.
In the end, great UI/UX design is all about empathy—understanding users’ needs, simplifying their journey, and designing solutions that make their lives easier. As a designer, the goal is to create experiences that feel seamless, familiar, and empowering. Remember, when users don’t notice the design but love the experience, that’s when you’ve succeeded.
You too can share in the comments box below: Which law do you think will have the biggest impact on your designs?