Observer bias Researchers may possibly deliver their own personal biases and perspectives, which often can influence their results and interpretations. I’m a admirer of four-color pens. Here is my process: black is for all Principal notes; blue is for organizing Most important notes, having secondary notes, and making revisions; https://onlinecasesolution20190.nizarblog.com/35411841/the-smart-trick-of-ivey-case-studies-that-nobody-is-discussing