Do you have a complex program that requires many tools to be intuitively arranged and easy to find? One method to find out how your users will look for these tools is to do the card sort.
Another reason it’s a great idea to run user research tests is that your application may be used in a wide variety of ways by your users. For example, some users might have 20 other applications open at the same time. And some users may only be using it for one thing that needs to be designed better.
These users are using the app in dramatically different ways.
(Image from: https://www.webdesignerdepot.com/2016/04/designing-complex-products/)
Additionally, when running user experience tests, you can find our what’s hard to use or unclear about your design. Clarity is king.
Despite popular opinion, substituting images for text can often alienate potential customers who can’t figure out what you mean quickly enough. So instead of this:
Use something like Microsoft Office does, a combination of pictures and text:
Alternately, for the tail of users that desire only visual icons, you can also study how quickly new users pick up on your symbolic images and how motivated they are to do so.
Today’s software complexity is growing, and with that comes a great need to manage interactions in a clear and engaging way.