Archive for the ‘usability’ Category

User experience myths

Friday, August 6th, 2010

I’ve had many conversations about people preferences to scrolling and everything has to be 3 clicks etc, These are myths and are no longer valid arguments.

From my experience of watching users testing:

  • Users don’t mind scrolling – if you ask they will probably say that they do, but in practice if they have found what they want they do it without realising.
  • Users are quite happy to click more that three times to get to a resource if the navigation path is simple and clear. They don’t like it if they are unsure if they’re on the right path 4 clicks in.

I just came across a website UXmyths. It is a gem and gives you all the comeback you need to counter these sorts of views.

Web design conventions; positioning of common elements

Tuesday, October 6th, 2009

Here are some quick thoughts on the positioning of common elements on a web page:

  • Home button in or near menu on far left on all pages except the homepage
  • Logo in the upper left corners of all pages
  • Open search field in upper right of all pages
  • Log in/out upper right of all pages
  • Shopping basket icon upper right of all pages

The above highlights the most common areas of placement for particular elements on a website. As such users expect to see them there. Following these design trends helps users feel comfortable/familiar with how to use the website and allows them to get on with their desired task.

Random usability thoughts…

Friday, September 18th, 2009

A call to action within text is stronger than graphical ads, as people ignore anything they think looks like an advertisement.

A home button should be on all pages except the homepage somewhere on the top left of the screen. A link home from the logo should also exist but is not enough on its own.

If items are given an equal visual weight, their order isn’t that important. A good example is the role based IA on the http://www.hfea.gov.uk/ website.

Lastly… wireframes always make a page look far busier than it will be in a designed version.

Usability vs accessibility

Tuesday, August 11th, 2009

It is widely acknowledged that accessibility complements usability and there are very few examples where they conflict. But I have found one…

The national lottery results checker available on their website used to work really well for me. It used to move focus to the next field once you had input your number for the current field automatically. I’d have my ticket in my left hand while inputting with my right – it was a real annoyance to move my right hand to the left side of keyboard to tab across or worse change focus by using the mouse. Due to accessibility guidelines this has now been changed so that there is no automatic change of focus – you have to activate the change by pressing tab or click. So I feel I have quite an awkward experience.

There must be a solution that works well for both. The WCAG 2 guidelines 3.2 says you have to make web pages appear and operate in predictable ways and I think the preference is for the user to activate any change, which is perfectly feasible for search controls or dropdown selection boxes. However, thinking about how many will use this control it may be appropriate to follow the alternative advice stated in the success criteria, if an onchange event occurs is there an explanation of what will happen when the control is changed available prior to the controls activation.

My solution therefore is to ensure that the user is informed that the control will change focus once they have entered a valid number for a field. This therefore meets the guidelines and works for me. Does this work well in practice for people using screen readers or alternative technologies? I would be glad to get any thoughts on this.

 

If you wouldn’t do it for ‘real’ then don’t do it online.

Monday, April 20th, 2009

Businesses really must think about matching the online customer experience to the offline world.

Real life scenario

Imagine that you went to your local travel agent to book your summer holiday.

You told the travel agent the holiday you wanted and paid a deposit. The Agent then gave you a booking reference and told you when to pay the outstanding amount.

You return to the same travel agent to pay the outstanding amount on the due date. However, the agent tells you that because you have booked a sun holiday, you can’t pay for the outstanding amount there; you need to call this number or go to our other shop in the town.

I chose to go to the other shop in town and enquired how I get to the other shop. The agent gives a me a map of France, which is a little pointless because I’m in the South East of England. When I complain that the map is incorrect, The agent tells me “In this instance you will need to call reservations”.

No travel agent would allow this to happen in one of their shops, so why do they allow it to happen on their website? Apart from being completely frustrating, this is exceptionally bad customer service and would put me off going back next year to book my holiday.

How to make it better

Just three simple changes would make me a happy customer who would think about going back.

1. Allow me to make a final payment online. After all, I could make the deposit payment or I could have paid in full first time, so why can’t I pay the rest online while other types of holiday makers can?

As far as I could see from the web form, the booking reference was in a different format to the one allowed. If the issue is just as cosmetic as it seems, then this is really bad.

If it is database rules, then these too are easily changed. When I did eventually find my local shop to pay, the agent just entered my booking reference in to the system gave me the chip and pin device and it was done. It took all of 2 minutes (except the 20 minute walk to the shop).

2. Fix the map functionality online, just in case I do want to go in store

3. And finally, when I point out that the map isn’t working, don’t tell me to call reservations, it has nothing to do with reservations – I just want to use your map.

Business benefits

From this example there are a couple of clear business benefits:

1. Happy customers mean possible repeat business (who can afford to let their customers go to the competition?)

2. Reduced process costs – Was it really necessary for the shop staff and website customer service to be involved as well as the telephone reservation team to be on standby for one simple payment?

Usability, persuasion, emotion, and trust…

Wednesday, October 8th, 2008

I was quite surprised when recently shopping on Amazon.co.uk to experience a few usability annoyances as well as buying a camera that I hadn’t intended to.

I was doing a bit of research on a particular camera I had seen elsewhere to see if I could get it cheaper. I was pretty convinced I was going to buy it; the decision was now from where. However, this changed when I spotted the user reviews. They ended up being pretty mixed, and someone suggested an alternative. So I checked out the alternative, which had all positive reviews and I ended up buying it.

This was totally against my initial intention or expectation and my decision to purchase was based upon my emotion as I was led by the user reviews.

However, basic usability was not great, what an awful screen where you enter you card details:

  • The layout felt weird, as the entry fields were laid out horizontally for, card type, name, number etc etc; and
  • There was bad error feedback: I missed something out (I think) because when I hit next/submit (whatever the button was called to get me to the next screen) I got an error message telling me there was something wrong with my details. So it cleared everything I had entered and didn’t tell me where or what was wrong, so I had to fill out all fields on this page again. How annoying:-(

It’s not a catastrophic usability error because I still completed my purchase, but it was annoying all the same. Maybe I made allowances because it was Amazon; because of the Brand I kind of trusted them a bit more, but if it a smaller and less well known site/company I’m not sure I would have continued.

Check out http://beyondusability.humanfactors.com/ where designing for persuasion, emotion and trust is thought to be essential when staying ahead.

Fitts’ law – 'the science of the obvious'

Thursday, March 6th, 2008

Fitts’ law is about size and distance. The bigger and closer something is the easier is it to reach or in terms of screen design the easier it will be to click, whereas if it is smaller and further away it will be more difficult.

For example, when designing a form your primary action should be bigger and nearer, whereas something that you don’t want the users to click easily such as an undo or delete button (which could have catastrophic consequences) you make smaller and harder to reach.

Action buttons

If you want to know more listen to Jared Spool’s podcast at:
http://www.uie.com/brainsparks/2008/02/28/usability-tools-podcast-applying-fittss-law/

Calculate ROI on usability improvements

Friday, February 29th, 2008

Just found these really useful calculators that work out the return on investment for you usability projects. The calculators can be used to measure things like:

  • reduced reliance on helpdesks
  • increased conversion rates
  • reduced training costs

The calculators have been put together by Human Factors International. http://www.humanfactors.com/training/roi.asp

usability testing

Tuesday, October 30th, 2007

I have been running a series of usability tests and I know I’m stating the obvious but you can’t underestimate the importance of them. I guess this is especially true for me who is the usability specialist that sits on the design team – of course I end up getting too close to the product.

I’ve tried not to get too close and remain objective. However, this has manifested itself in me being overly critical, where I was beginning to get seriously worried that we were way of the mark and with very little time to deliver, yet having the opportunity to run some tests this week with real end users has brought me back to a sense of realism.

Wednesday, September 19th, 2007

I’ve just been trying to figure out the best place to position error validation messages on a data entry grid that looks like:

grid.jpg

I would say that a validation message under each relevant field would be the most functional and is immediately clear to a user which field needs looking at. However, because of the restricted space it’s not very aesthetically pleasing. The problem here is that being aesthetically pleasing is also crucial to the user experience and more importantly to those that will sign off the application from a brand perspective.

Maybe a fresh pair of eyes will help tomorrow!