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More Hidden Gems of Good Design: Unpacking More UX Laws

  • Arjun S S
  • May 7, 2025
  • 3 min read

law

We've already peeked at some of the fundamental "laws" that often guide great User Experience. But the world of UX wisdom is vast! Let's uncover a few more insightful principles that can help you craft even more intuitive and user-friendly digital experiences, all without needing a law degree!

1. Serial Position Effect: First and Last Impressions Matter Most

Think about a list of things you need to remember. You're more likely to recall the first few items and the last few items better than the ones in the middle, right? That's the Serial Position Effect in action. We tend to remember the beginning and end of a sequence more clearly.

  • In Simple Words: Put your most important information or actions at the beginning and end of lists, processes, or even a screen layout. These are the spots users are most likely to remember.

  • Real-World Example: In a website navigation menu, placing key categories like "Home" and "Contact Us" at the far ends. For a multi-step form, highlighting the initial steps and the final confirmation.

2. Peak-End Rule: How We Remember Experiences

Have you ever had a generally okay experience, but one really amazing (the "peak") or really terrible (the "end") moment sticks with you the most? The Peak-End Rule suggests that we judge an experience largely based on its most intense point (the peak) and its final moment (the end), rather than the average of every moment.

  • In Simple Words: Focus on making the most impactful moments of your user's journey positive and memorable. Pay extra attention to the final step or screen, ensuring it leaves a good lasting impression.

  • Real-World Example: A smooth and satisfying completion of a purchase process (the end), even if there were minor hiccups earlier. Or, quickly resolving a critical error (the peak of negativity) to mitigate a bad overall feeling.

3. Aesthetic-Usability Effect: Pretty Things Feel Easier to Use

Let's be honest, we're often drawn to things that look good. The Aesthetic-Usability Effect states that users often perceive aesthetically pleasing designs as being more usable, even if they aren't necessarily more efficient. Good looks can mask minor usability issues initially.

  • In Simple Words: While usability is paramount, don't underestimate the power of good design. A visually appealing interface can create a more positive initial impression and even make users more forgiving of minor usability quirks. However, beauty is only skin deep usability issues will eventually surface!

  • Real-World Example: A beautifully designed app might initially feel intuitive, even if some navigation elements aren't perfectly placed. However, persistent usability problems will eventually outweigh the aesthetic appeal.

4. Tesler's Law (Law of Conservation of Complexity): Some Complexity is Inherent

Think about trying to simplify a really complicated task. You can make it easier to do, but you can't eliminate all the complexity, it has to live somewhere. Tesler's Law suggests that every system has a certain amount of complexity that cannot be reduced. You can only shift it around.

  • In Simple Words: When designing, aim to reduce unnecessary complexity for the user by making the interface clear and intuitive. However, understand that some underlying complexity might be unavoidable and needs to be managed effectively, not just hidden.

  • Real-World Example: Simplifying the user interface of a professional video editing software. While the basic controls might be easy to access, the underlying complexity of advanced editing features will still exist, perhaps accessible through more detailed menus.

5. Doherty Threshold: Faster is Better (Up to a Point!)

Have you ever clicked a button and waited… and waited… and waited? It's frustrating! The Doherty Threshold suggests that providing system feedback within 400 milliseconds (0.4 seconds) feels instantaneous to users, keeping them engaged and productive.

  • In Simple Words: Strive for speed! Design your interfaces to respond quickly to user actions. Even small delays can significantly impact the perceived usability and enjoyment.

  • Real-World Example: A button changing color immediately upon being pressed, or a loading indicator appearing promptly when data is being fetched.

Applying These Laws Wisely

Just like the previous set, these "laws" aren't rigid commandments. They're valuable insights into human behaviour and perception that can guide your design decisions. By understanding these principles, you can create digital experiences that feel more natural, efficient, and ultimately, more satisfying for your users. Keep these in mind as you craft your next design, and you'll be well on your way to creating truly user-centered products.

 
 
 

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