How should you go about collecting data in usability tests? This article examines the data collection process in usability studies and describes some popular data logging solutions. Since most of these tools are expensive, we show you how you can use Microsoft Excel with Visual Basic macros to collect the data.
Most usability tests culminate with a short questionnaire that asks the participant to rate, usually on a 5- or 7-point scale, various characteristics of the system. Experience shows that participants are reluctant to be critical of a system, no matter how difficult they found the tasks. This article describes a guided interview technique that overcomes this problem based on a word list of over 100 adjectives. We also include a spreadsheet to generate and randomise the word list.
Many people think questionnaire and survey design is common sense. If that's true then common sense can't be that common because many surveys on the web are very poorly designed. For example, surveys often ask irrelevant questions or biased questions or just too many questions. These problems make the resulting data impossible to analyse. This article reviews best practice in survey design.
Rather than create yet another definition of usability, we decided to take a different approach and work through the alphabet, picking one word for each letter to capture the flavour of the field. So we proudly present the A-Z of usability or usability in 26 words.