Most interesting part of this article, is the way that people make up stories about why they do what they do. This is why self-reported data is always we use it for qualitative research, that is but never to find answers to questions. Humans are very good at making up stories about why they do, and these stories are usually lies.
Here's a nice roundup of do's and don'ts for conversion rate optimizers. Even experienced AB testers like us need to be reminded of the "big rocks" of CRO, and this article has them. Process, segmentation, qualitative research, and mobile.