I only glance at quantitative things like once a year come review time. Talking with people is a much better way to assess their performance. Usually people ar

I only glance at quantitative things like once a year come review time. Talking with people is a much better way to assess their performance. Usually people are hardest on themselves. Everyone is different, has different life circumstances and performs differently. In general I think the premise of the question is wrong. It's taking a factory building widgets approach to a creative process. You'd have to have standardized measurable inputs like product requirements that can be worked by anyone on the team. Everyone on the team has to have the same level of experience with the technology used so any learning curve is the same for everyone. Proper standardized estimation needs to be done on every piece of work and then measure the time used to do the work. This is like CMM Level 5 type of utter nonsense, in my opinion. Also, its more often the case that the inputs (requirements) shift and change as they get worked on which will not be reflected in any quantitative way.