When we meet new clients and begin discussing the goals of the software project, there’s often a bit of education that has to take place. A frequent mistake that I see is when people confuse usability and user experience. It’s an easy mistake, but there are important distinctions that effect the design.
From their book “Interaction Design”, Preece, Rogers, and Sharp define Usability as being a multifaceted concept. Usability goals can be memorability, learnability, efficiency, safety, utility, or a combination of those. Some of those goals might even conflict somewhat. Some of the old command prompt interfaces are extremely efficient and very usable for expert users, but are almost totally unusable by new users who need the application to be more learnable.
They go on to define a separate set of experience goals that include satisfying, enjoyable, fun, entertaining, helpful, motivating, aesthetically pleasing, and supportive of creativity. These are a little bit more difficult to measure; they are subjective in nature. These describe how the user connects with the product at an emotional level.
How about the example of Mr. Usability himself Jakob Nielsen’s website? I know that he’s an easy target, but it takes only one look at his site useit.com to clearly understand that it is very usable, but the experience totally sucks. People CAN use it, but few WANT to. There is little difference between Nielsen’s site and the very first public HTML sites. Even though user expectations and desires have evolved, his site hasn’t.
So usability is not user experience. It is as important, maybe even more important than experience, but if you ignore the experience and focus solely on usability you might end up with something that nobody WANTS to use. At the first opportunity of a real alternative with a good experience, people will abandon the usable but unsatisfying, laborious, boring, unhelpful, demotivating, ugly, and/or non-creative experience for the better one.
Elements that create solid usability are easier to imitate without screaming rip to most people. A lot of usability is predicated on existing patterns. It’s user experience that needs more attention in order to differentiate your product.
When we meet new clients and begin discussing the goals of the software project, there’s often a bit of education that has to take place. A frequent mistake that I see is when people confuse usability and user experience. It’s an easy mistake, but there are important distinctions that effect the design.
From their book “Interaction Design”, Preece, Rogers, and Sharp define Usability as being a multifaceted concept. Usability goals can be memorability, learnability, efficiency, safety, utility, or a combination of those. Some of those goals might even conflict somewhat. Some of the old command prompt interfaces are extremely efficient and very usable for expert users, but are almost totally unusable by new users who need the application to be more learnable.
They go on to define a separate set of experience goals that include satisfying, enjoyable, fun, entertaining, helpful, motivating, aesthetically pleasing, and supportive of creativity. These are a little bit more difficult to measure; they are subjective in nature. These describe how the user connects with the product at an emotional level.
How about the example of Mr. Usability himself Jakob Nielsen’s website? I know that he’s an easy target, but it takes only one look at his site useit.com to clearly understand that it is very usable, but the experience totally sucks. People CAN use it, but few WANT to. There is little difference between Nielsen’s site and the very first public HTML sites. Even though user expectations and desires have evolved, his site hasn’t.
So usability is not user experience. It is as important, maybe even more important than experience, but if you ignore the experience and focus solely on usability you might end up with something that nobody WANTS to use. At the first opportunity of a real alternative with a good experience, people will abandon the usable but unsatisfying, laborious, boring, unhelpful, demotivating, ugly, and/or non-creative experience for the better one.
Elements that create solid usability are easier to imitate without screaming rip to most people. A lot of usability is predicated on existing patterns. It’s user experience that needs more attention in order to differentiate your product.
Update: another example of a bad, yet usable experience coming out of the Usability field: Usability Professional Organization. Do usability experts hate visual design? They must!
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One of the things I’ve been very happy about in newer web interfaces is that I don’t have to use a “Save” button. Google docs and GMail are good examples of these. The system backs up the changes I make while I’m making them – or at least frequently enough that I don’t feel compelled to use the save button. I like this a lot. It frees me from worry and from an additional step. Apple has also been using this for a while in system settings. You make a change to your system preferences and those changes are simply made. No saving involved. You aren’t doing anything that can’t be undone, so why worry about the additional step?
That’s why I was really surprised when I went to change my connected sites in Google Buzz and, completely ignoring the save button (like banner ad blindness, I guess I’ve become blind to save buttons as well?) I got an alert that prompted me to either lose the changes I made or go back to the previous screen and hit the save button. WHAT?
The changes I’m making here are simple and certainly aren’t permanent. The task is simply moving a finite number of items from one bucket (not connected) to another (connected). And rather than closing the dialog after making changes, I am forced to use the save button.
It’s really strange for Google, being outside of their general UI metaphor, and kind of a backward step in online applications.

Go back! In time.
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Armando Roggio interviewed me about the book on ECommerce Developer. The audio cuts out because I’m pacing back and forth while speaking on the phone and evidently there’s a dead spot in the office. Still, the interview went well and Armando was very gracious. Check it out for some further discussion about topics in the book.