From the category archives:

Usability testing

Are you looking to hire a usability lab in London? Here’s a short list of some. I’ve used Webcredible’s and City University’s labs. Both have viewing facilities with one-way mirrors and Morae Recorder on the PCs. Webcredible – Southwark Wyoming Studios – Oxford Circus Fluent Studios – Clerkenwell City University – Clerkenwell Research House – Wigmore Street […]

Usability professionals need to actively listen to customers. Staying attuned to what they are thinking, feeling, and doing is critical. But it’s easy to be distracted when you’re with a customer – you might feel they’re not telling you anything new, or you’re feeling the pressure from a client who’s observing. Three attitudes can help […]

Benchmarking products or websites is a task that usability professionals are often called upon to do. Expert reviews using guidelines is a common technique. One problem with guidelines is that different experts can interpret them in different ways. For example, “Have a clear link to the home page” is a commonly quoted guideline, but what […]

My previous article described the second step of the Discovery Phase of expert evaluations which is a quick pass through all tasks to identify major bloopers. The third and final step of the Discovery Phase is a detailed analysis of the interface. This is your deep inspection, when you will gather the majority of data for […]

In the Discovery phase of expert evaluations you are going through the interface looking for usability problems. The first step of the Discovery phase is to evaluate how easily users can orient to to the website – their first impressions really. The second step of the Discovery phase is to walk through the interface, getting […]

Discovering problems in usability evaluations is a two-step process – an initial walk-through to get a feel for the interface then a more detailed inspection. This article gives you some questions to ask during the initial walk-through.

Project teams need time to digest and reflect upon your usability testing results. I recently ran a workshop with a project team in which I presented usability testing results. That presentation was the first half of the workshop. In the second half we worked on specific design changes. Both sessions went very smoothly and we […]

Instead of using the mean to report average task times from usability evaluations, you should use the median or geometric mean, according to new research by Jeff Sauro in Denver, USA. The most common way to find the ‘average’ task time from a set of users is to calculate the mean. But average task times based […]

By choice I use Saros or  Fieldworks in London for recruiting participants for user testing or research. I’ve used them both for years and they typically respond well to a brief and keep me well informed of how recruitment is progressing. Other people have mentioned to me that they use: Criteria in Hampstead Focus 4 People […]

Three users can be enough to tell you whether something is unusable.