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Four UX psychology principles we swear by

The Psychology of UX

Why we care about User Experience Psychology

One of the things we decided when we started EQ was that people would be at the heart of all we did. It wasn’t going to be all about money and stuff, but partnerships and helping people win. This isn’t just a nice thing to say or a gimmick, this is the backbone of everything we do here, and website design is no exception.

User Experience (UX) has become an important part of any design process, and it is a huge part of our journey when we are helping our clients design and develop a new website.

So, what can you bring from psychology to UX?

Psychology is the scientific study of how people behave, think and feel. So, the way somebody behaves, thinks and feels during their journey through your website could be the difference between them making a connection with you and your brand or going somewhere else. With this in mind, we follow some important principles when helping our clients get a website win.

We can’t take credit for the following four principles, as they were originated by people far more intelligent than me! But we do use these human behavioural laws most days.

1. Hick’s law

Or the Hick–Hyman Law, named after British and American psychologists William Edmund Hick and Ray Hyman. This Law states that the more options a user has, the slower they will respond. This means that by removing extra options from the user, they will be able to find the solution to their problem more easily.

So, how do you apply Hick’s law to your web design?

The trick is to get the right balance of – enough choice, so the user feels like they are deciding on the journey they take, but not too many options that make every stage long and painful. Remember to keep things simple; why use two steps/buttons when one will give the user the same outcome.

Hick's Law

2. Fitts’ Law

In 1954, psychologist Paul Fitts came up with this law. This isn’t only for website UX, but in this context, Fitts’ law states that the amount of time required for a person to move a mouse cursor to a target area on your website is a result of the distance to the target divided by the size of the target. So, the longer the distance and the smaller the target’s size, the longer the action takes.

Why should I consider Fitts’ law for my website?

Have you ever found yourself getting frustrated when you can’t find the ‘view cart’ button or ‘buy now’? Mistakes like this can cause your users to give up, and you might lose them from your site altogether. Remember, if a user has to look for a small button on a page, chances are they won’t find it. It’s worth considering the following –

  • Target areas should be big enough for users to select them accurately
  • Target areas should have enough spacing between them
  • Target areas should be placed in areas of the website that allow them to be easily accessed

Fitt's Law

3. Jakobs law

Jakob Nielsen, a Danish web usability consultant and human-computer interaction researcher, stands by this principle which has become a law to many useability professionals. The law states that ‘Users spend most of their time on other sites that are NOT yours.’ So this means that users would prefer your site to work the same way as all the other sites they already use.

How can you use Jakob’s law on your website?

As humans, we develop learned behaviours. So when a user sees a hamburger menu on a mobile app or website, they know how that is going to work when clicked. You need to get the balance of original design built around common learned website behaviours.

  • Users will transfer behaviours they have learned around one familiar product to another that appears similar.
  • Using existing learner behaviours, we can create superior user experiences in which the users can focus on their tasks rather than on learning new behaviours.

4. The isolation effect

The theory (also known as the Von Restorff Effect) was coined by German psychiatrist and paediatrician Hedwig von Restorff. In her 1933 study, Restorff found that when participants were presented with a list of categorically similar items with one distinctive, isolated item on the list, memory for the item was improved.

Why should the isolation effect matter to me?

Taking this into a website user scenario where multiple similar objects are displayed, the one that differs the most is likely to be remembered. People value a thing differently depending on whether it is placed in isolation and whether it is placed next to an alternative. In particular, a certain choice can be made to look more attractive if it is placed next to an alternative option to which it is distinctively better in some respect. You should use this idea to guide your users to the desired action on your website. It might be a ‘free trial’ or ‘buy now’ button that stands out from the other button on your page by colour, shape or interaction.

The Isolation Effect

Key takeaways

I would never confess to being the world’s best UX guru, but I’ve got to know people in the time I have been on the planet so far. I know that when it comes to websites, users want to think the least they have to, behave the most natural way they know how and feel immersed in their user journey from start to finish. So when designing your website, remember the above four laws/principles, and you are already doing better than many websites out there.

  • Keep it simple – don’t give the user too many options
  • Make sure to pay attention to the position and size of elements
  • Don’t reinvent the wheel; use what users already know.
  • Make your element stand out from the rest if you want people to interact

Need more help?

You can find out more about experience here 👉  thinkeq.co.uk/what/experience/
And if you’d some more help with your website, get in touch with us today!
👉  Start your project

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Jordan Fairhurst
19/03/2025
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Had the pleasure of working with Think EQ on a few occasions and they're amazing and easy to work with. The team are all really friendly and fantastic in bringing ideas to life. Whether they be existing ideas or brand new concepts, their creativity is brilliant. They're a breeze to work with as they have great communications and time management, meaning we could meet various tight deadlines. They ensure the best service possible for their clients and will definitely will be working with them again in the future.
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Toby Wilman
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The team at ThinkEQ have been awesome, right from our first meeting through to the continued work we're doing together to evolve and improve our brand. We started off with a full brand update and website build, and we were so impressed by the team and the outcome that every time we've needed extra support the team are and will always be our first port of call. If you're considering working with the ThinkEQ team, I can't recommend them enough, they are all super nice people, uber professional and incredible at what they do.
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Tim Smith
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We (Kalibrate) have worked with ThinkEQ for a few years and the team have always been super responsive in support and proactive in finding opportunities for us to optimize our site. Thanks to Drshna, Rich, and Andy.
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Jonny Mantel
28/02/2025
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We had the pleasure of working with Think EQ, and we are really impressed with the results. From the start they really took the time to listen and understand our requirements and turned that into our site. They have continued to help us develop other ideas where required. Communication is always really great throughout all the projects we have had and I would highly recommend them.
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K 180
26/02/2025
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I can’t recommend ThinkEQ enough! They did an amazing job refreshing my WooCommerce site—it looks so much better and we regularly get positive feedback about it. Rupa, Rich and Andy really took the time to understand what I needed, and their attention to detail was spot on. They kept me updated every step of the way, and nothing was too much trouble. The whole process was smooth, stress-free, and honestly a pleasure. If you need a website refresh, these are the people to go to.
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Fireproof Fire Engineering
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Really happy with the outcomes of the website project we took on with them. Highly recommended. Great to work with and will definitely think to put more work their way.
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jaya verma
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Drshna has guided us through the process of developing our website to a high standard. I have found her to be approachable, friendly and accessible. She provides guidance that is tailored to our service and specific audience.
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Oli Grandidge
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Martin Collinge
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Professional but friendly, they have built a great high performing website for us. We get monthly performance reports and any questions we have are promptly answered. Thanks.
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Prash Ladva
03/06/2024
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An organisation that treats you like family; putting people before profits. Working with the team at ThinkEQ has been the single best decision for our business. Their support and expertise goes beyond the scope of web and app development, as the team are always on hand to help sound board any ideas, connect you to individuals in their network, and be part of the entreprenerial rollercoaster with you. They completely understand the founders' journey, and are on-hand when things go wrong! Whether it is product development, design, strategy, marketing or proof of concept to implementation - look no further.