Strength of evidence
Relevant metrics: Conversions
How: Write a clear task scenario explaining what problem participants need to solve and show a finished website, a functional prototype, or even a wireframe to observe where they click first. Time each task as a 90% first click rate on a correct label might deceptively indicate effective navigation that took 3 minutes to figure out.
Why: If users can't find what they're looking for, not much else matters. User researcher Dr. Bob Bailey found that for any given task, a user's success rate is 87% as long as their first click is correct. If their first click was not correct, the chances for success fell to below 50%.
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Before the experiment
The first thing to do when planning any kind of test or experiment, is to figure out what you want to test. To make critical assumptions explicit, fill out an experiment sheet as you prepare your test. We created a sample sheet for you to get started. Download the Experiment Sheet.
Measure user comprehension and interface complexity
Presenting a flat screenshot or a mock up in order to subsequently ask users to click on the image to complete a task, can provide insights into how easy your interface is to comprehend – whether it is too complex to understand.
A study into usability and FirstClick Usability Testing showed that when a user’s first click is correct, he or she had 87% chance of completing an action correctly – and only 46% when the first click was incorrect.
Measuring the time it takes for users to find and click a target provide insights into how easily users can find it and will act as a useful benchmark for comparing the usability of design alternatives.
Similarly, depending on the task you give participants, first click testing can provide information about user expectations, visual clarity and whether your design patterns are readily understood.
Ask follow up questions
Especially for participants who dwell too long figuring out where to chose, it is interesting to find out more about what made them hesitate. If you are conducting the test remotely using a software tool, trigger a follow up question as the user is done clicking.
Observing users do first-click testing in real life can help generate an understanding of their frustrations. If you have that luxury, watch their facial expression, ask what goes through their mind as they body language express uncomfort or frustration.
Benchmark with the original
You are looking to find out whether your new design performs better than what it replaces. This is why it is essential to not only test your new design, but also the original. Testing the original will act as a benchmark and help you decide whether to roll out your new design or keep iterating.
After the experiment
To make sure you move forward, it is a good idea to systematically record your the insights you learned and what actions or decisions follow. We created a sample Learning Sheet, that will help you capture insights in the process of turning your product ideas successful. Download the Learning Sheet.
Yelp event button test
To test whether Yelp users could find the Events link and which of two link options they would select, the following task wording was presented to test users:
“You’ve heard that there’s a street festival coming up in your city. You don’t know much about it, and would like to see if Yelp has any information about it.”
With 38 completing the tasks, 39% of participants went for the search bar, 37% to one Events link, and 16% to the other.
Source: First-click Testing 101