December 5, 2022

Live training: How to benchmark an existing site structure using Treejack

If you missed our live training, don’t worry, we’ve got you covered! In this session, our product experts Katie and Aidan discuss why, how and when to benchmark an existing structure using Treejack.

They also talk through some benchmarking use cases, demo how to compare tasks between different studies, and which results are most helpful.

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Collating your user testing notes

It’s been a long day. Scratch that - it’s been a long week! Admit it. You loved every second of it.

Twelve hour days, the mad scramble to get the prototype ready in time, the stakeholders poking their heads in occasionally, dealing with no-show participants and the excitement around the opportunity to speak to real life human beings about product or service XYZ. Your mind is exhausted but you are buzzing with ideas and processing what you just saw. You find yourself sitting in your war room with several pages of handwritten notes and with your fellow observers you start popping open individually wrapped lollies leftover from the day’s sessions. Someone starts a conversation around what their favourite flavour is and then the real fun begins. Sound familiar? Welcome to the post user testing debrief meeting.

How do you turn those scribbled notes and everything rushing through your mind into a meaningful picture of the user experience you just witnessed? And then when you have that picture, what do you do next? Pull up a bean bag, grab another handful of those lollies we feed our participants and get comfy because I’m going to share my idiot-proof, step by step guide for turning your user testing notes into something useful.

Let’s talk

Get the ball rolling by holding a post session debrief meeting while it’s all still fresh your collective minds. This can be done as one meeting at the end of the day’s testing or you could have multiple quick debriefs in between testing sessions. Choose whichever options works best for you but keep in mind this needs to be done at least once and before everyone goes home and forgets everything. Get all observers and facilitators together in any meeting space that has a wall like surface that you can stick post its to - you can even use a window! And make sure you use real post its - the fake ones fall off!

Mark your findings (Tagging)

Before you put sharpie to post it, it’s essential to agree as a group on how you will tag your observations. Tagging the observations now will make the analysis work much easier and help you to spot patterns and themes. Colour coding the post its is by far the simplest and most effective option and how you assign the colours is entirely up to you. You could have a different colour for each participant or testing session, you could have different colours to denote participant attributes that are relevant to your study eg senior staff and junior staff, or you could use different colours to denote specific testing scenarios that were used. There’s many ways you could carve this up and there’s no right or wrong way. Just choose the option that suits you and your team best because you’re the ones who have to look at it and understand it. If you only have one colour post it eg yellow, you could colour code the pen colours you use to write on the notes or include some kind of symbol to help you track them.

Processing the paper (Collating)

That pile of paper is not going to process itself! Your next job as a group is to work through the task of transposing your observations to post it notes. For now, just stick them to the wall in any old way that suits you. If you’re the organising type, you could group them by screen or testing scenario. The positioning will all change further down the process, so at this stage it’s important to just keep it simple. For issues that occur repeatedly across sessions, just write them down on their own post its- doubles will be useful to see further down the track.In addition to  holding a debrief meetings, you also need to round up everything that was used to capture the testing session/s. And I mean EVERYTHING.

Handwritten notes, typed notes, video footage and any audio recordings need to be reviewed just in case something was missed. Any handwritten notes should be typed to assist you with the completion of the report. Don’t feel that you have to wait until the testing is completed before you start typing up your notes because you will find they pile up very quickly and if your handwriting is anything like mine…. Well let’s just say my short term memory is often required to pick up the slack and even that has it’s limits. Type them up in between sessions where possible and save each session as it’s own document. I’ll often use the testing questions or scenario based tasks to structure my typed notes and I find that makes it really easy to refer back to.Now that you’ve processed all the observations, it’s time to start sorting your observations to surface behavioural patterns and make sense of it all.

Spotting patterns and themes through affinity diagramming

Affinity diagramming is a fantastic tool for making sense of user testing observations. In fact it’s just about my favourite way to make sense of any large mass of information. It’s an engaging and visual process that grows and evolves like a living creature taking on a life of its own. It also builds on the work you’ve just done which is a real plus!By now, testing is over and all of your observations should all be stuck to a wall somewhere. Get everyone together again as a group and step back and take it all in. Just let it sit with you for a moment before you dive in. Just let it breathe. Have you done that? Ok now as individuals working at the same time, start by grouping things that you think belong together. It’s important to just focus on the content of the labels and try to ignore the colour coded tagging at this stage, so if session one was blue post its don’t group all the blue ones together just because they’re all blue! If you get stuck, try grouping by topic or create two groups eg issues and wins and then chunk the information up from there.

You will find that the groups will change several times over the course of the process  and that’s ok because that’s what it needs to do.While you do this, everyone else will be doing the same thing - grouping things that make sense to them.  Trust me, it’s nowhere near as chaotic as it sounds! You may start working as individuals but it won’t be long before curiosity kicks in and the room is buzzing with naturally occurring conversation.Make sure you take a step back regularly and observe what everyone else is doing and don’t be afraid to ask questions and move other people’s post its around- no one owns it! No matter how silly something may seem just put it there because it can be moved again. Have a look at where your tagged observations have ended up. Are there clusters of colour? Or is it more spread out? What that means will depend largely on how you decided to tag your findings. For example if you assigned each testing session its own colour and you have groups with lot’s of different colours in them you’ll find that the same issue was experienced by multiple people.Next, start looking at each group and see if you can break them down into smaller groups and at the same time consider the overall picture for bigger groups eg can the wall be split into say three high level groups.Remember, you can still change your groups at anytime.

Thinning the herd (Merging)

Once you and your team are happy with the groups, it’s time to start condensing the size of this beast. Look for doubled up findings and stack those post its on top of each other to cut the groups down- just make sure you can still see how many there were. The point of merging is to condense without losing anything so don’t remove something just because it only happened once. That one issue could be incredibly serious. Continue to evaluate and discuss as a group until you are happy. By now clear and distinct groups of your observations should have emerged and at a glance you should be able to identify the key findings from your study.

A catastrophe or a cosmetic flaw? (Scoring)

Scoring relates to how serious the issues are and how bad the consequences of not fixing them are. There are arguments for and against the use of scoring and it’s important to recognise that it is just one way to communicate your findings.I personally rarely use scoring systems. It’s not really something I think about when I’m analysing the observations. I rarely rank one problem or finding over another. Why? Because all data is good data and it all adds to the overall picture.I’ve always been a huge advocate for presenting the whole story and I will never diminish the significance of a finding by boosting another. That said, I do understand the perspective of those who place metrics around their findings. Other designers have told me they feel that it allows them to quantify the seriousness of each issue and help their client/designer/boss make decisions about what to do next.We’ve all got our own way of doing things, so I’ll leave it up to you to choose whether or not you score the issues. If you decide to score your findings there are a number of scoring systems you can use and if I had to choose one, I quite like Jakob Nielsen’s methodology for the simple way it takes into consideration multiple factors. Ultimately you should choose the one that suits your working style best.

Let’s say you did decide to score the issues. Start by writing down each key finding on it’s own post it and move to a clean wall/ window. Leave your affinity diagram where it is. Divide the new wall in half: one side for wins eg findings that indicate things that tested well and the other for issues. You don’t need to score the wins but you do need to acknowledge what went well because knowing what you’re doing well is just as important as knowing where you need to improve. As a group (wow you must be getting sick of each other! Make sure you go out for air from time to time!) score the issues based on your chosen methodology.Once you have completed this entire process you will have everything you need to write a kick ass report.

What could possibly go wrong? (and how to deal with it)

No process is perfect and there are a few potential dramas to be aware of:

People jumping into solution mode too early

In the middle of the debrief meeting, someone has an epiphany. Shouts of We should move the help button! or We should make the yellow button smaller! ring out and the meeting goes off the rails.I’m not going to point fingers and blame any particular role because we’ve all done it, but it’s important to recognise that’s not why we’re sitting here. The debrief meeting is about digesting and sharing what you and the other observers just saw. Observing and facilitating user testing is a privilege. It’s a precious thing that deserves respect and if you jump into solution mode too soon, you may miss something. Keep the conversation on track by appointing a team member to facilitate the debrief meeting.

Storage problems

Handwritten notes taken by multiple observers over several days of testing adds up to an enormous pile of paper. Not only is it a ridiculous waste of paper but they have to be securely stored for three months following the release of the report. It’s not pretty. Typing them up can solve that issue but it comes with it’s own set of storage related hurdles. Just like the handwritten notes, they need to be stored securely. They don’t belong on SharePoint or in the share drive or any other shared storage environment that can be accessed by people outside your observer group. User testing notes are confidential and are not light reading for anyone and everyone no matter how much they complain. Store any typed notes in a limited access storage solution that only the observers have access to and if anyone who shouldn’t be reading them asks, tell them that they are confidential and the integrity of the research must be preserved and respected.

Time issues

Before the storage dramas begin, you have to actually pick through the mountain of paper. Not to mention the video footage, and the audio and you have to chase up that sneaky observer who disappeared when the clock struck 5. All of this takes up a lot of time. Another time related issue comes in the form of too much time passing in between testing sessions and debrief meetings. The best way to deal with both of these issues  is to be super organised and hold multiple smaller debriefs in between sessions where possible. As a group, work out your time commitments before testing begins and have a clear plan in place for when you will meet.  This will prevent everything piling up and overwhelming you at the end.

Disagreements over scoring

At the end of that long day/week we’re all tired and discussions around scoring the issues can get a little heated. One person’s showstopper may be another person’s mild issue. Many of the ranking systems use words as well as numbers to measure the level of severity and it’s easy to get caught up in the meaning of the words and ultimately get sidetracked from the task at hand. Be proactive and as a group set ground rules upfront for all discussions. Determine how long you’ll spend discussing an issue and what you will do in the event that agreement cannot be reached. People want to feel heard and they want to feel like their contributions are valued. Given that we are talking about an iterative process, sometimes it’s best just to write everything down to keep people happy and merge and cull the list in the next iteration. By then they’ve likely had time to reevaluate their own thinking.

And finally...

We all have our own ways of making sense of our user testing observations and there really is no right or wrong way to go about it. The one thing I would like to reiterate is the importance of collaboration and teamwork. You cannot do this alone, so please don’t try. If you’re a UX team of one, you probably already have a trusted person that you bounce ideas off. They would be a fantastic person to do this with. How do you approach this process? What sort of challenges have you faced? Let me know in the comments below.

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1 min read

"Could I A/B test two content structures with tree testing?!"

"Dear Optimal Worshop
I have two huge content structures I would like to A/B test. Do you think Treejack would be appropriate?"
— Mike

Hi Mike (and excellent question)!

Firstly, yes, Treejack is great for testing more than one content structure. It’s easy to run two separate Treejack studies — even more than two. It’ll help you decide which structure you and your team should run with, and it won’t take you long to set them up.

When you’re creating the two tree tests with your two different content structures, include the same tasks in both tests. Using the same tasks will give an accurate measure of which structure performs best. I’ve done it before and I found that the visual presentation of the results — especially the detailed path analysis pietrees — made it really easy to compare Test A with Test B.

Plus (and this is a big plus), if you need to convince stakeholders or teammates of which structure is the most effective, you can’t go past quantitative data, especially when its presented clearly — it’s hard to argue with hard evidence!

Here’s two example of the kinds of results visualizations you could compare in your A/B test: the pietree, which shows correct and incorrect paths, and where people ended up:

treejack pietree

And the overall Task result, which breaks down success and directness scores, and has plenty of information worth comparing between two tests:

treejack task result

Keep in mind that running an A/B tree test will affect how you recruit participants — it may not be the best idea to have the same participants complete both tests in one go. But it’s an easy fix — you could either recruit two different groups from the same demographic, or test one group and have a gap (of at least a day) between the two tests.

I’ve one more quick question: why are your two content structures ‘huge’?

I understand that sometimes these things are unavoidable — you potentially work for a government organization, or a university, and you have to include all of the things. But if not, and if you haven’t already, you could run an open card sort to come up with another structure to test (think of it as an A/B/C test!), and to confirm that the categories you’re proposing work for people.

You could even run a closed card sort to establish which content is more important to people than others (your categories could go from ‘Very important’ to ‘Unimportant’, or ‘Use everyday’ to ‘Never use’, for example). You might be able to make your content structure a bit smaller, and still keep its usefulness. Just a thought... and of course, you could try to get this information from your analytics (if available) but just be cautious of this because of course analytics can only tell you what people did and not what they wanted to do.

All the best Mike!

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Which comes first: card sorting or tree testing?

“Dear Optimal, I want to test the structure of a university website (well certain sections anyway). My gut instinct is that it's pretty 'broken'. Lots of sections feel like they're in the wrong place. I want to test my hypotheses before proposing a new structure. I'm definitely going to do some card sorting, and was planning a mixture of online and offline. My question is about when to bring in tree testing. Should I do this first to test the existing IA? Or is card sorting sufficient? I do intend to tree test my new proposed IA in order to validate it, but is it worth doing it upfront too?" — Matt

Dear Matt,

Ah, the classic chicken or the egg scenario: Which should come first, tree testing or card sorting?

It’s a question that many researchers often ask themselves, but I’m here to help clear the air! You should always use both methods when changing up your information architecture (IA) in order to capture the most information.

Tree testing and card sorting, when used together, can give you fantastic insight into the way your users interact with your site. First of all, I’ll run through some of the benefits of each testing method.


What is card sorting and why should I use it?

Card sorting is a great method to gauge the way in which your users organize the content on your site. It helps you figure out which things go together and which things don’t. There are two main types of card sorting: open and closed.

Closed card sorting involves providing participants with pre-defined categories into which they sort their cards. For example, you might be reorganizing the categories for your online clothing store for women. Your cards would have all the names of your products (e.g., “socks”, “skirts” and “singlets”) and you also provide the categories (e.g.,“outerwear”, “tops” and “bottoms”).

Open card sorting involves providing participants with cards and leaving them to organize the content in a way that makes sense to them. It’s the opposite to closed card sorting, in that participants dictate the categories themselves and also label them. This means you’d provide them with the cards only, and no categories.

Card sorting, whether open or closed, is very user focused. It involves a lot of thought, input, and evaluation from each participant, helping you to form the structure of your new IA.


What is tree testing and why should I use it?

Tree testing is a fantastic way to determine how your users are navigating your site and how they’re finding information. Your site is organized into a tree structure, sorted into topics and subtopics, and participants are provided with some tasks that they need to perform. The results will show you how your participants performed those tasks, if they were successful or unsuccessful, and which route they took to complete the tasks. This data is extremely useful for creating a new and improved IA.

Tree testing is an activity that requires participants to seek information, which is quite the contrast to card sorting. Card sorting is an activity that requires participants to sort and organize information. Each activity requires users to behave in different ways, so each method will give its own valuable results.


Comparing tree testing and card sorting: Key differences

Tree testing and card sorting are complementary methods within your UX toolkit, each unlocking unique insights about how users interact with your site structure. The difference is all about direction.

Card sorting is generative. It helps you understand how users naturally group and label your content; revealing mental models, surfacing intuitive categories, and informing your site’s information architecture (IA) from the ground up. Whether using open or closed methods, card sorting gives users the power to organize content in ways that make sense to them.

Tree testing is evaluative. Once you’ve designed or restructured your IA, tree testing puts it to the test. Participants are asked to complete find-it tasks using only your site structure – no visuals, no design – just your content hierarchy. This highlights whether users can successfully locate information and how efficiently they navigate your content tree.

In short:

  • Card sorting = "How would you organize this?"
  • Tree testing = "Can you find this?"


Using both methods together gives you clarity and confidence. One builds the structure. The other proves it works.


Which method should you choose?

The right method depends on where you are in your IA journey. If you're beginning from scratch or rethinking your structure, starting with card sorting is ideal. It will give you deep insight into how users group and label content.

If you already have an existing IA and want to validate its effectiveness, tree testing is typically the better fit. Tree testing shows you where users get lost and what’s working well. Think of card sorting as how users think your site should work, and tree testing as how they experience it in action.


Should you run a card or tree test first?

In this scenario, I’d recommend running a tree test first in order to find out how your existing IA currently performs. You said your gut instinct is telling you that your existing IA is pretty “broken”, but it’s good to have the data that proves this and shows you where your users get lost.

An initial tree test will give you a benchmark to work with – after all, how will you know your shiny, new IA is performing better if you don’t have any stats to compare it with? Your results from your first tree test will also show you which parts of your current IA are the biggest pain points and from there you can work on fixing them. Make sure you keep these tasks on hand – you’ll need them later!

Once your initial tree test is done, you can start your card sort, based on the results from your tree test. Here, I recommend conducting an open card sort so you can understand how your users organize the content in a way that makes sense to them. This will also show you the language your participants use to name categories, which will help you when you’re creating your new IA.

Finally, once your card sort is done you can conduct another tree test on your new, proposed IA. By using the same (or very similar) tasks from your initial tree test, you will be able to see that any changes in the results can be directly attributed to your new and improved IA.

Once your test has concluded, you can use this data to compare the performance from the tree test for your original information architecture.


Why using both methods together is most effective

Card sorting and tree testing aren’t rivals, view them as allies. Used together, they give you end-to-end clarity. Card sorting informs your IA design based on user mental models. Tree testing evaluates that structure, confirming whether users can find what they need. This combination creates a feedback loop that removes guesswork and builds confidence. You'll move from assumptions to validation, and from confusion to clarity – all backed by real user behavior.

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