Why do our estimates for a project or a testing phase so often turn out wrong? Whatever causes underestimation, we clearly do not learn from experience, as we repeatedly make estimation errors, despite feedback showing previous errors. It’s a chronic problem. What could be driving these errors? Here are five factors.
Dr. Andrew Brown is a principal consultant at SQS. Recently, he has developed an independent line of research into understanding why we humans make the mistakes that lead to software defects. He has spoken at several conferences on this subject and was winner of the EuroSTAR 2017 best paper award for a tutorial on cognitive biases in testing. He has 25 years’ experience in the software industry.
Previous roles include Heading up QA at HMV, Head of QA at a financial software house and a test manager in Japan.
He holds a degree in Physics and Maths, an MBA from Warwick Business School and a doctorate from Imperial College.