June 29, 2023
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Usability Experts Unite: The Power of Heuristic Evaluation in User Interface Design

Usability experts play an essential role in the user interface design process by evaluating the usability of digital products from a very important perspective - the users! Usability experts utilize various techniques such as heuristic evaluation, usability testing, and user research to gather data on how users interact with digital products and services. This data helps to identify design flaws and areas for improvement, leading to the development of user-friendly and efficient products.

Heuristic evaluation is a usability research technique used to evaluate the user interface design of a digital product based on a set of ‘heuristics’ or ‘usability principles’. These heuristics are derived from a set of established principles of user experience design - attributed to the landmark article “Improving a Human-Computer Dialogue” published by web usability pioneers Jakob Nielsen and Rolf Molich in 1990. The principles focus on the experiential aspects of a user interface. 

In this article, we’ll discuss what heuristic evaluation is and how usability experts use the principles to create exceptional design. We’ll also discuss how usability testing works hand-in-hand with heuristic evaluation, and how minimalist design and user control impact user experience. So, let’s dive in!

Understanding Heuristic Evaluation


Heuristic evaluation helps usability experts to examine interface design against tried and tested rules of thumb. To conduct a heuristic evaluation, usability experts typically work through the interface of the digital product and identify any issues or areas for improvement based on these broad rules of thumb, of which there are ten. They broadly cover the key areas of design that impact user experience - not bad for an article published over 30 years ago!

The ten principles are:

  1. Prevention error: Well-functioning error messages are good, but instead of messages, can these problems be removed in the first place? Remove the opportunity for slips and mistakes to occur.
  2. Consistency and standards: Language, terms, and actions used should be consistent to not cause any confusion.
  3. Control and freedom for users: Give your users the freedom and control to undo/redo actions and exit out of situations if needed.
  4. System status visibility: Let your users know what’s going on with the site. Is the page they’re on currently loading, or has it finished loading?
  5. Design and aesthetics: Cut out unnecessary information and clutter to enhance visibility. Keep things in a minimalist style.
  6. Help and documentation: Ensure that information is easy to find for users, isn’t too large and is focused on your users’ tasks.
  7. Recognition, not recall: Make sure that your users don’t have to rely on their memories. Instead, make options, actions and objects visible. Provide instructions for use too.
  8. Provide a match between the system and the real world: Does the system speak the same language and use the same terms as your users? If you use a lot of jargon, make sure that all users can understand by providing an explanation or using other terms that are familiar to them. Also ensure that all your information appears in a logical and natural order.
  9. Flexibility: Is your interface easy to use and it is flexible for users? Ensure your system can cater to users to all types, from experts to novices.
  10. Help users to recognize, diagnose and recover from errors: Your users should not feel frustrated by any error messages they see. Instead, express errors in plain, jargon-free language they can understand. Make sure the problem is clearly stated and offer a solution for how to fix it.

Heuristic evaluation is a cost-effective way to identify usability issues early in the design process (although they can be performed at any stage) leading to faster and more efficient design iterations. It also provides a structured approach to evaluating user interfaces, making it easier to identify usability issues. By providing valuable feedback on overall usability, heuristic evaluation helps to improve user satisfaction and retention.

The Role of Usability Experts in Heuristic Evaluation

Usability experts play a central role in the heuristic evaluation process by providing feedback on the usability of a digital product, identifying any issues or areas for improvement, and suggesting changes to optimize user experience.

One of the primary goals of usability experts during the heuristic evaluation process is to identify and prevent errors in user interface design. They achieve this by applying the principles of error prevention, such as providing clear instructions and warnings, minimizing the cognitive load on users, and reducing the chances of making errors in the first place. For example, they may suggest adding confirmation dialogs for critical actions, ensuring that error messages are clear and concise, and making the navigation intuitive and straightforward.

Usability experts also use user testing to inform their heuristic evaluation. User testing involves gathering data from users interacting with the product or service and observing their behavior and feedback. This data helps to validate the design decisions made during the heuristic evaluation and identify additional usability issues that may have been missed. For example, usability experts may conduct A/B testing to compare the effectiveness of different design variations, gather feedback from user surveys, and conduct user interviews to gain insights into users' needs and preferences.

Conducting user testing with users that represent, as closely as possible, actual end users, ensures that the product is optimized for its target audience. Check out our tool Reframer, which helps usability experts collaborate and record research observations in one central database.

Minimalist Design and User Control in Heuristic Evaluation

Minimalist design and user control are two key principles that usability experts focus on during the heuristic evaluation process. A minimalist design is one that is clean, simple, and focuses on the essentials, while user control refers to the extent to which users can control their interactions with the product or service.

Minimalist design is important because it allows users to focus on the content and tasks at hand without being distracted by unnecessary elements or clutter. Usability experts evaluate the level of minimalist design in a user interface by assessing the visual hierarchy, the use of white space, the clarity of the content, and the consistency of the design elements. Information architecture (the system and structure you use to organize and label content) has a massive impact here, along with the content itself being concise and meaningful.

Incorporating minimalist design principles into heuristic evaluation can improve the overall user experience by simplifying the design, reducing cognitive load, and making it easier for users to find what they need. Usability experts may incorporate minimalist design by simplifying the navigation and site structure, reducing the number of design elements, and removing any unnecessary content (check out our tool Treejack to conduct site structure, navigation, and categorization research). Consistent color schemes and typography can also help to create a cohesive and unified design.

User control is also critical in a user interface design because it gives users the power to decide how they interact with the product or service. Usability experts evaluate the level of user control by looking at the design of the navigation, the placement of buttons and prompts, the feedback given to users, and the ability to undo actions. Again, usability testing plays an important role in heuristic evaluation by allowing researchers to see how users respond to the level of control provided, and gather feedback on any potential hiccups or roadblocks.

Usability Testing and Heuristic Evaluation

Usability testing and heuristic evaluation are both important components of the user-centered design process, and they complement each other in different ways.

Usability testing involves gathering feedback from users as they interact with a digital product. This feedback can provide valuable insights into how users perceive and use the user interface design, identify any usability issues, and help validate design decisions. Usability testing can be conducted in different forms, such as moderated or unmoderated, remote or in-person, and task-based or exploratory. Check out our usability testing 101 article to learn more.

On the other hand, heuristic evaluation is a method in which usability experts evaluate a product against a set of usability principles. While heuristic evaluation is a useful method to quickly identify usability issues and areas for improvement, it does not involve direct feedback from users.

Usability testing can be used to validate heuristic evaluation findings by providing evidence of how users interact with the product or service. For example, if a usability expert identifies a potential usability issue related to the navigation of a website during heuristic evaluation, usability testing can be used to see if users actually have difficulty finding what they need on the website. In this way, usability testing provides a reality check to the heuristic evaluation and helps ensure that the findings are grounded in actual user behavior.

Usability testing and heuristic evaluation work together in the design process by informing and validating each other. For example, a designer may conduct heuristic evaluation to identify potential usability issues and then use the insights gained to design a new iteration of the product or service. The designer can then use usability testing to validate that the new design has successfully addressed the identified usability issues and improved the user experience. This iterative process of designing, testing, and refining based on feedback from both heuristic evaluation and usability testing leads to a user-centered design that is more likely to meet user needs and expectations.

Conclusion

Heuristic evaluation is a powerful usability research technique that usability experts use to evaluate digital product interfaces based on a set of established principles of user experience design. After all these years, the ten principles of heuristic evaluation still cover the key areas of design that impact user experience, making it easier to identify usability issues early in the design process, leading to faster and more efficient design iterations. Usability experts play a critical role in the heuristic evaluation process by identifying design flaws and areas for improvement, using user testing to validate design decisions, and ensuring that the product is optimized for its intended users.

Minimalist design and user control are two key principles that usability experts focus on during the heuristic evaluation process. A minimalist design is clean, simple, and focuses on the essentials, while user control gives users the freedom and control to undo/redo actions and exit out of situations if needed. By following these principles, usability experts can create an exceptional design that enhances visibility, reduces cognitive load, and provides a positive user experience. 

Ultimately, heuristic evaluation is a cost-effective way to identify usability issues at any point in the design process, leading to faster and more efficient design iterations, and improving user satisfaction and retention. How many of the ten heuristic design principles does your digital product satisfy? 

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The ultimate reading list for new user researchers

Having a library of user research books is invaluable. Whether you’re an old hand in the field of UX research or just dipping your toes in the water, being able to reference detailed information on methods, techniques and tools will make your life much easier.

There’s really no shortage of user research/UX reading lists online, so we wanted to do something a little different. We’ve broken our list up into sections to make finding the right book for a particular topic as easy as possible.

General user research guides

These books cover everything you need to know about a number of UX/user research topics. They’re great to have on your desk to refer back to – we certainly have them on the bookshelf here at Optimal Workshop.

Observing the User Experience: A Practitioner's Guide to User Research

Mike Kuniavsky

Observing the User Experience: A Practitioner’s Guide to User Research

This book covers 13 UX research techniques in a reference format. There’s a lot of detail, making it a useful resource for people new to the field and those who just need more clarification around a certain topic. There’s also a lot of practical information that you’ll find applicable in the real world. For example, information about how to work around research budgets and tight time constraints.

Just Enough Research

Erika Hall

Just Enough Research

In Just Enough Research, author Erika Hall explains that user research is something everyone can and should do. She covers several research methods, as well as things like how to identify your biases and make use of your findings. Designers are also likely to find this one quite useful, as she clearly covers the relationship between research and design.

Research Methods in Human-Computer Interaction

Harry Hochheiser, Jonathan Lazar, Jinjuan Heidi Feng

Research Methods in Human-Computer Interaction

Like Observing the User Experience, this is a dense guide – but it’s another essential one. Here, experts on human-computer interaction and usability explain different qualitative and quantitative research methods in an easily understandable format. There are also plenty of real examples to help frame your thinking around the usefulness of different research methods.

Information architecture

If you’re new to information architecture (IA), understanding why it’s such an important concept is a great place to start. There’s plenty of information online, but there are also several well-regarded books that make great starting points.

Information Architecture for the World Wide Web: Designing Large-Scale Web Sites

Peter Morville, Louis Rosenfeld

Information Architecture for the World Wide Web: Designing Large-Scale Web Site

You’ll probably hear this book referred to as “the polar bear book”, just because the cover features a polar bear. But beyond featuring a nice illustration of a bear, this book clearly covers the process of creating large websites that are both easy to navigate and appealing to use. It’s a useful book for designers, information architects and user researchers.

How to Make Sense of Any Mess

Abby Covert

How to Make Sense of Any Mess

This is a great introduction to information architecture and serves as a nice counter to the polar bear book, being much shorter and more easily digestible. Author Abby Covert explains complex concepts in a way anyone can understand and also includes a set of lessons and exercises with each chapter.

User interviews

For those new to the task, the prospect of interviewing users is always daunting. That makes having a useful guide that much more of a necessity!

Interviewing Users: How to Uncover Compelling Insights

Steve Portigal

Interviewing Users: How to Uncover Compelling Insights

While interviewing users may seem like something that doesn’t require a guide, an understanding of different interview techniques can go a long way. This book is essentially a practical guide to the art of interviewing users. Author Steve Portigal covers how to build rapport with your participants and the art of immersing yourself in how other people see the world – both key skills for interviewers!

Usability testing

Web usability is basically the ease of use of a website. It’s a broad topic, but there are a number of useful books that explain why it’s important and outline some of the key principles.

Don't Make Me Think: A Common Sense Approach to Web Usability

Steve Krug

Don't Make Me Think: A Common Sense Approach to Web Usability

Don’t Make Me Think is the first introduction to the world of UX and usability for many people, and for good reason – it’s a concise introduction to the topics and is easy to digest. Steve Krug explains some of the key principles of intuitive navigation and information architecture clearly and without overly technical language. In the latest edition, he’s updated the book to include mobile usability considerations.

As a testament to just how popular this book is, it was released in 2000 and has since had 2 editions and sold 400,000 copies.

Design

The design–research relationship is an important one, even if it’s often misunderstood. Thankfully, authors like Don Norman and Vijay Kumar are here to explain everything.

The Design of Everyday Things

Don Norman

The Design of Everyday Things

This book, by cognitive scientist and usability engineer Don Norman, explains how design is the communication between an object and its user, and how to improve this communication as a way of improving the user experience. If nothing else, this book will force you to take another look at the design of everyday objects and assess whether or not they’re truly user-friendly.

101 Design Methods: A Structured Approach for Driving Innovation in Your Organization

Vijay Kumar

101 Design Methods: A Structured Approach for Driving Innovation in Your Organization

A guidebook for innovation in the context of product development, this book approaches the subject in a slightly different way to many other books on the same subject. The focus here is that the practice of creating new products is actually a science – not an art. Vijay Kumar outlines practical methods and useful tools that researchers and designers can use to drive innovation, making this book useful for anyone involved in product development.

See our list on Goodreads

We've put together a list of all of the above books on Goodreads, which you can access here.

Further reading

For experienced practitioners and newcomers alike, user research can often seem like a minefield to navigate. It can be tricky to figure out which method to use when, whether you bring a stakeholder into your usability test (you should) and how much you should pay participants. Take a look at some of the other articles on our blog if you’d like to learn more.

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How to create an effective customer journey map

Understanding your customers is central to any organization which wants to deliver an outstanding experience. But how do you understand your customers better? Tailoring their experience with your products and your organization to suit them should include a customer journey map.

It doesn’t mean your organization needs a brightly colored, fully designed infographic that outlines each and every action your user takes within your product. It does mean an effective customer journey map that promotes empathy and provides a clear vision for improving customer interactions. There are no rules around what that visualization looks like and it is up to your team to create one that makes the most of your customer’s journey.

What is customer journey mapping? 🤔

Customer journey mapping (sometimes referred to as a user experience map) is a technique that allows you to visualize your customer’s key touchpoints, sentiments, pain points, and actions. Plotted in sequential order. It’s a map of a customer’s experience with your brand or product, from awareness to purchase and beyond. 

Customer journey mapping helps you look beyond key touchpoints and encourages empathy with your customers. To understand who they are, even a persona to give them a life and demographic. Helping designers and key stakeholders understand where they are coming from. And where you can address their needs, avoid their pain points and encourage them to engage with your product. And even identify opportunities for innovation and improvement across the board.

Why you need a customer journey map 💥

What’s better than a customer that feels seen and understood once? A customer that feels the organization or product really understands their needs (and responds to their frustrations). Like all successful, long-term relationships, keeping customers returning is built on empathy and a solid grasp of their needs and frustrations. 

When you want to get to know your customer, like really get to know them, it’s essential to map their customer journey. Creating a shared understanding of what your customers think, feel, and struggle with as they interact with your organization. Spending the time to establish a customer journey map can help align around identifying known problems, identifying new user pain points, and removing roadblocks for your customers, ensuring their success.

Spending the time to get inside the mind and journeys of your customers through mapping helps your team to:

  • Create a visual guide of the end-to-end customer experience
  • Get an understanding of multiple customer pathways and unravel complex user experiences
  • Create target personas and allow insights to solve problems more effectively
  • Increase your organization’s empathy for your current and future customers
  • Identify potential pain points and roadblocks for your customers
  • Breakdown silos within your organization and improve alignment across teams
  • With a clearer understanding of your customers, better insights to achieve stakeholder buy-in

How to create a customer journey map 🛤️

Here are 8 key steps to get the most out of your customer journey map process:

  1. Bring key stakeholders together for an initial brainstorming session
  2. Identify potential user personas - demographics, pain points, interests, etc
  3. Create an empathy map - get a real feel for your customer, who they are, and what they want
  4. Flesh out your ideas with user research. Get under your user persona skin with focus groups, interviews, and surveys
  5. Identify possible customer touchpoints
  6. Choose the information you want to highlight - not everything will be relevant
  7. Decide on the best customer journey map tool to answer your questions
  8. Start building your map

Customer journey mapping examples 🗺️

Each and every customer’s journey is different. This, of course, means that there is no single best customer journey map example or template. Instead, the best customer journey map for any given situation will depend not only on your customers but also on your product, your team, and the goals you’re hoping to achieve by creating the map in the first place.

We’ve found a few examples of customer journey maps to help inspire your thinking:

Current state customer journey maps help you to visualize a user’s experience as it is right now. These are fact-based journey maps - to create an accurate, current state journey map. A good dose of user research data around your actual customers and interactions will help shape this.

An example of a customer journey map
An example of a customer journey map

Future state customer journey maps focus on what the customer journey can and should look like in the future. Although UX data is certainly an important aspect of understanding customers, future state journey maps involve a fair amount of creative speculation and interpretation. These customer journey maps focus on customer hopes and wants (future feelings), in addition to experiences and reactions. They can be a little objective and should be developed in balance with both positive and negative interactions.

Day in the life customer journey maps help you visualize your customer’s entire daily routine. Interactions with family, their commute, work meetings, afternoon coffee, etc. Regardless of whether or not the activities are related to your company. This type of journey map should be organized chronologically to give key insights into how and where customers are. What are the distractions, and where could they interact with your brand or product? How can key pain points be eased?

Service blueprints are a useful counterpart to a classic customer journey map. Whereas a customer journey map focuses on the thoughts, needs, and actions of the customer, a service blueprint reflects the perspective of the organization and its employees. What needs to happen behind the scenes to ensure the customer’s experience is the very best it can be.

Circular customer journey maps may be useful to visualize the customer journey as a circle or loop. Recognizing that some customers are recurring and non-transactional. Particularly through subscription-based relationships.

An empathy map is used to create a shared understanding of customers around their wants, needs, thoughts, and actions. This can be a great starting point to getting under your customer’s skin.

An example of an empathy map
An example of an empathy map

Wrap Up 🌯

There is no one size fits all customer journey map. Each customer is unique, each organization is different. Through creating customer journeys, personas and visualizing their key touchpoints, pain points, and understanding who they are, empathy throughout the organization can be generated. With this as a tool to bring key stakeholders on board and to pinpoint where products (and services) can be improved to keep customers or even bring new ones on board, the user experience can be better and more effective.

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Product Roadmap Update

At Optimal Workshop, we're dedicated to building the best user research platform to empower you with the tools to better understand your customers and create intuitive digital experiences. We're thrilled to announce some game-changing updates and new products that are on the horizon to help elevate the way you gather insights and keep customers at the heart of everything you do. 

What’s new…

Integration with Figma 🚀

Last month, we joined forces with design powerhouse Figma to launch our integration. You can import images from Figma into Chalkmark (our click-testing tool) in just a few clicks, streamlining your workflows and getting insights to make decisions based on data not hunches and opinions.  

What’s coming next…

Session Replays 🧑‍💻

With session replay you can focus on other tasks while Optimal Workshop automatically captures card sort sessions for you to watch in your own time.  Gain valuable insights into how participants engage and interpret a card sort without the hassle of running moderated sessions. The first iteration of session replays captures the study interactions, and will not include audio or face recording, but this is something we are exploring for future iterations. Session replays will be available in tree testing and click-testing later in 2024.  

Reframer Transcripts 🔍

Say goodbye to juggling note-taking and hello to more efficient ways of working with Transcripts! We're continuing to add more capability to Reframer, our qualitative research tool, to now include the importing of interview transcripts. Save time, reduce human errors and oversights by importing transcripts, tagging and analyzing observations all within Reframer. We’re committed to build on transcripts with video and audio transcription capability in the future,  we’ll keep you in the loop and when to expect those releases. 

Prototype testing 🧪

The team is fizzing to be working on a new Prototype testing product designed to expand your research methods and help test prototypes easily from the Optimal Workshop platform. Testing prototypes early and often is an important step in the design process, saving you time and money before you invest too heavily in the build. We are working with customers and on delivering the first iteration of this exciting new product. Stay tuned for Prototypes coming in the second quarter of 2024.   

Workspaces 🎉

Making Optimal Workshop easier for large organizations to manage teams and collaborate more effectively on projects is a big focus for 2024. Workspaces are the first step towards empowering organizations to better manage multiple teams with projects. Projects will allow greater flexibility on who can see what, encouraging working in the open and collaboration alongside the ability to make projects private. The privacy feature is available on Enterprise plans.

Questions upgrade❓

Our survey product Questions is in for a glow up in 2024 💅. The team are enjoying working with customers, collecting and reviewing feedback on how to improve Questions and will be sharing more on this in the coming months. 

Help us build a better Optimal Workshop

We are looking for new customers to join our research panel to help influence product development. From time to time, you’ll be invited to join us for interviews or surveys, and you’ll be rewarded for your time with a thank-you gift.  If you’d like to join the team, email product@optimalworkshop.com

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