Showing posts with label usability. Show all posts
Showing posts with label usability. Show all posts

Sunday, 12 October 2008

If it walks like a duck and quacks like a duck, I would call it a duck.

Just a few days ago my Nokia Phone Suite application told me there was a new version available. And the installation surprised me again. It's the year 2008 and the most simple usability rules are still unknown to some software developers.

Let me show you the dialog:


It is really simple. If you suggest I can click YES the should be a YES button. Not a button with a green V. Same for the NO button. Not a red X.

Call it what it is.

I understand: it it obvious, everyone can figure out that the green V is the YES and the red x is the NO. But it takes (a little) time to figure that out. And that, only that, can kill the trust users have in your application. Dr. Eric Schaffer of Human Factors International talks about PET design. Design for Persuation, Emotion and Trust. I believe it's a fair point. Especially the fact that there always is tension between that and Usability. In the Nokia case, the designers probably wanted to make a trendy flashy application (it's a lot of young people who use mobile phone applications, not?).

I think Nokia went wrong here in the installation of the application. They don't do what they promise: offer a YES and NO button. Bye bye trust.

Will the end user regain his trust and trust the application itself or will they quit using it at the first failure?

I leave you with this question, but I can make a guess...

Wednesday, 7 May 2008

Customer Experience and User Experience

"The customer is always right"

"Know thy user, for he is not thee"

A marketeer looks differently at an online customer than a web designer. A Usability Analyst looks differently at an online user than a web designer. So do marketeers and Usability Analists look the same way at an online user?

In the real world: they don't. But I think they should. We all know that a website is not a pure technical thing, neither a pure marketing and sales thing and neither a pure user thing. These three forces work together and since the beginning of the internet, the technical forces always been stronger than the others and in the last few years the marketing and sales force has become one of the strongest forces: we need return on investment!

Lately, organisations start to realize that Usability of a website is very important. If your website is not usable they will leave. And even worse: if your competitor's website is more usable, they'll use that one because the User Experience is better!

And a good user experience is the basis for a good customer experience. For a good customer experience you need to look at the whole customer life-cycle. Huub Esten, my collegue at Capgemini says: "You need to be the best in one part and at least as good as the others for the other parts of the process". Especially when your company does online business, awareness of Usability and User Centered Design is key.

In his latest "Alertbox", the Usability guru Jakob Nielsen told about a research where they found that if your webpage has about 111 words on it, about 50% will be read. With more words that percentage drops fast. So tell that to the marketing people: your customers will read only half (or less!) of what you need to say to them.

References:


Tuesday, 5 February 2008

Are users getting more experienced? Should we drop Usability Design Guidelines?

Jakob Nielsen, the famous Usability guru, wrote an article about Usability enemies and the counter arguments they have against design guidelines:
  • "You're testing idiots — most users are smarter and don't mind complexity."
  • "You were right in the past, but users have now learned how to use advanced websites, so simplicity isn't a requirement anymore."
In a recent research, they concluded that user skills are improving, but slightly. Still a lot of guidelines still apply...

(Quote) For now, one thing is clear: we're confirming more and more of the old usability guidelines. Even though we have new issues to consider, the old issues aren't going away. A few examples:
  • Email newsletters remain the best way to drive users back to websites. It's incredible how often our study participants say that a newsletter is their main reason for revisiting a site. Most professional users are not very interested in podcasts or newsfeeds (RSS).
  • Opening new browser windows is highly confusing for most users. Although many users can cope with extra windows that they've opened themselves, few understand why the Back button suddenly stops working in a new window that the computer initiated. Opening new windows was #2 on my list of top-10 Web design mistakes of 1999; that this design approach continues to hurt users exemplifies both the longevity of usability guidelines and the limited improvement in user skills.
  • Links that don't change color when clicked still create confusion, making users unsure about what they've already seen on a site.
  • Splash screens and intros are still incredibly annoying: users look for the "skip intro" button — if not found, they often leave. One user wanted to buy custom-tailored shirts and first visited Turnbull & Asser because of their reputation. Clicking the appropriate link led to a page where a video started to play without warning and without a way to skip it and proceed directly to actual info about the service. The user watched a few seconds; got more and more agitated about the lack of options to bypass the intro, and finally closed down the site and went to a competitor. Customer lost.
  • A fairly large minority of users still don't know that they can get to a site's homepage by clicking its logo, so I still have to recommend having an explicit "home" link on all interior pages (not on the homepage, of course, because no-op links that point to the current page are confusing — yet another guideline we saw confirmed again several times last week). It particularly irks me to have to retain the "explicit home link" guideline, because I had hoped to get rid of this stupid extra link. But many users really do change very slowly, so we'll probably have to keep this guideline in force until 2020 — maybe longer. At least breadcrumbs are a simple way to satisfy this need.
  • People are still very wary, sometimes more so than in the past, about giving out personal information. In particular, the B2B sites in this new study failed in exactly the same way as most B2B sites in our major B2B research: by hitting users with a registration screen before they were sufficiently committed to the site.
  • Non-standard scrollbars are often overlooked and make people miss most of the site's offerings. The following screens show two examples from last week's testing.

(End Quote)

Read the whole article "User Skills Improving, But Only Slightly", by Jakob Nielsen.

Wednesday, 16 January 2008

The Usability of driving a car

If you have trouble convincing people that Usability is very important for your website, Rich Internet Application (RIA) or any other application, just put them in a strange car and tell them to drive...

I realised this when my car broke down and I needed a rental. Since my car is a company car, it always is a surprise which rental you get. Usually it is a car which is completely unknown to me, so it will be a long test drive.

When I got the car and wanted to drive away, I needed to look around to see if the controls were like I was used to. Usually things like steering wheels, throttles etc. are just the same, so I can get in and just drive away!

Less important things are less obvious, like changing the interval speed of the windscreen wipers and stuff like that.

And that is why people who can drive, can drive in any car! So, wouldn't it be nice if it was the same for using a website or application? And still, this is not the case...

A website should be obvious to use, like a car is. You shouldn't need to do a lot of thinking (read "Don't make me Think" by Steve Krug). People should be able to do the most common tasks or actions without reading the manual first. Off course, the "battle" between design and Usability comes up here, but I think it should be a major challenge for the designer to design for a website with great Usability. This is better than a great design leaving people confused on how to use it... So the Usability Analyst and the Designer should work together from the beginning.

If you want to introduce Usability in your project or create Usability awareness, please keep going and maybe use this example. I'm sure that anyone who ever drove a type car they've never drove before know exactly what you are talking about.

(Interested? Also read this post)

Wednesday, 24 October 2007

Yes, you really should do Usability Testing!


You should do Usability Testing. Really. When you create a new website, Usability Testing should be part of your project.

If not, it will cost you more money and less people will use, visit and like you website.

Why?

Simply because you are not the user. It is really impossible for people in the project or even in the company or people in the web development business. You have no idea how the visitors of your website experience the site. An you surely will agree that you want them to like it and use it?

What's the occasion?

At the company I work now, we've done a redesign project of their new website. A Usability test was done (by another company) on the old site. I started to work on the project when it actually was started already. So in fact I was a bit too late. But I tried to make the project work by introducing User Centered Design (UCD) to them. And Usability Testing is part of UCD.

What I've done.

I couldn't do the whole UCD process, but I did some parts to catch up and ensure that the project would be a success. Since you may not know what the UCD process is, I will tell you what I did in this perticular example.

I made personas. Personas are fictional website visitors which fit the main profile of the visitors. This profile was determined by talking to the Business people about who their customers are and on which they target. I made 3 Personas.

The website was graphically designed by a design company who seemingly didn't have too much website design experience. They still designed for print instead of the web. And these are really different!

When we saw the first designs, I knew we had a lot of work to do... I won't get into detail here, but I made quite some remarks on Usability issues. There are a lot of things about the use of colour, contrast of colours, position of elements, what kind of buttons to use, the use of bread crumbs, and so on, you can tell in advance they won't work or confuse the user.

At the end, I've won on a lot of parts, and some parts were left as is. They probably would be exposed in an Usability Test!

Functional testing

Using the Personas, I made some scenarios with the Business people. The scenarios represented the most common and most important scenarios on the website. The developers of the site should consider if the Personas would be able to complete these scenarios. I sent the scenarios to the Business people and asked them to make it part of their test-plan. The company has a low maturity on testing, so it also stimulated them to make testing, in fact, functional testing, more important.

The testing process started a bit uneasily, but after all it was done quite well.

The Usability Test

After the site was developed and functionally tested, the company decided it should go live and then do a Usability test. Well, it would be better to do the Usability test first. But hey, as I told before, I got into the project a bit late, so it was a bit hard to change the planning for this.

And it wasn't too big a problem, since I could do the test right after the site went live.

No or low budget Usability Testing

I've done a cheap Usability Test. This meant that I invited some friends and acquaintances to participate in the Test. They've never done a test like this and they hadn't seen the website yet. I drove to them in my car, so that cut down on expenses.

When I designed the test, I used the Personas to pick the participants and the scenarios to perform the test. I used a demo version of a screen capture software package to record what the participants did.

I told the participants that they were not doing an exam, and that if something didn't work or was difficult, the website was to blame. I asked them to perform the scenarios and cleverly avoid any questions they had. I was an observer and nothing more. This simulated the situation they would be in when they visit the site from home or somewhere else without anyone around from the company itself!

I also had a questionaire about how they liked the site, what they would change etc. And finally, as a bonus, I gave them a sheet with keywords like "nice", "ugly", "easy to use", "family like", "professional", etc. and asked them which keywords fitted the website. The results of this can be used to match them with the ones the Business people would like to represent the company.

All went well and it took me about 24 hours all together to design and take the test with the 5 participants!

Last monday I made the presentation to present the test results to the Business people. And again, it really surprised me! Issues arose about which I haven't thought yet and offcourse also some issues which I predicted when the design company presented their design ;-).

Now what?

Doing a Usability test before you even develop the site, on a paper prototype or prototype, will reveal 85% of the Usability issues inyour design. You should do the test again when you have developed a first version. It will again reveal 85% of the Usability issues. After some iterations, when the site is live, you should continue to do Usability Tests. The science of Usability changes, and the way users behave does.

What will this cost?

Early Usability Testing is much cheaper. The costs of fixing the issues from an Usability Test in an early design stage are at least 5 times lower that when they are fixed after the site has gone into production.