One of the main role of the researcher, is to provide quality, reliable data to the product team. However, it is not quite as easy as it may seem. Researchers, for lack of appropriate information or skill, may be at risk of generating data lacking in quality. There are multiple strategies that can be taken to ensure the highest quality of the data being collected, including careful review of the research protocol and a general skeptical approach to one’s research methodology. In this post, I’ll introduce the underlying reason why a good researcher should always initially cast a critical eye on the data he is being fed, and apply this to his own data. I will then discuss some common threats to good data collection I have encountered in recent weeks, and in particular the threats of bad recruitment.