Discuss The 4 questions to ask in a cognitive walkthrough

I actually laughed out loud at that car park machine, I should probably get out more. But it is dangerously easy to be so involved with a project that you totally miss something that's screamingly obvious to the rest of the world. I'm betting just one set of fresh eyes on that would have alerted them to the problem, they must be kicking themselves.

Thanks for this very clearly written description of a cognitive walkthrough - I'll be sharing this with my team. AND, I was just looking for those pictures of the machine at Stuttgart airport that I knew I'd seen somewhere - wonderful serendipity - thanks!

This was a really interesting read. It does amaze me some of the design decisions that people make without considering any usage scenarios.

I've done quite a bit of usability testing in my time, and every time the value is reinforced: the difference some quick testing and even a few small changes can make to a site is immense.

Thanks a lot for sharing.

Great story about the car park machine in Stuttgart, like Haley I loled ;)

I wonder though, what value does a cognitive walkthrough add to the design process and how important that value is to deliver better design.

Questsions 1 and 4 look to me like to be best answered by a usability study with a small group of potential users.