That's it. If you want to make a decision on anything other than your own subjective impressions, gather data. A lot or a little, it's better than just reaching out, blindly. But how reliable is your data? I've taught scientific method, statistics, and the assessment of user experience since the start of the 1980s. I've had some brilliant students and many inspirational colleagues. In the end, you realise, the answers you get are equal to the questions you ask.
This is the starting place for the questionnaires and other resources my students and colleagues and I have accumulated over the years when I was the Director of the Human Factors Research Group and a Senior Lecturer in the School of Applied Psychology, both at University College Cork, Ireland.
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