Wednesday May 19, 2010, 20:37During a design process of an interface, a designer should has a view of an potential user of the interface. There are some important factors to consider in developing a profile of a potential user.

...such as:

• user's work experience (kind of job, years of experience etc.)
• general computer experience (types of applications used etc.)
• specific computer experience (experience with hardware and specific operating system)
• experience with a kind of product we design
• experience with a similar products to this we design

Designers have to think "broadly" about users:

• don't just consider people who are experts
• don't limit yourself to the current or local market
• think about expansion, don't limit too much a group of people who you develop a product for
• make your product easy to use for novices and experts

How many people should we include in a test? It was found that:

• about half of all major usability problems are detected with 3 participants
• 80% of usability problems are detected with between 4 and 5 participants
• 90% is detected with 10 participants

A typical usability test now includes 6 to 12 participants, which are divided into 2 or 3 subgroups.

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A Practical Guide to Usability Testing

, created on Wednesday May 19, 2010, 20:37, article tagged with keywords: usability testing, Paper prototyping, web design, website,

Tags: usability testing, Paper prototyping, web design, website,

A Practical Guide to Usability Testing

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