Tying any kind measurement to reward is doomed to lead to people gaming the system. Doesn't matter if you're measuring input, output, stress level, time spent in the office - people will always game the system, because why the hell would anyone try to do a good job only to be punished because of not meeting the metrics expectation?
In order to be accurate, measurements must be completely neutral, and their only purpose should be to signal to a human, perhaps a senior, that something is wrong. Then the human can intervene, check the whole process and make decisions on how to remove the issue.
In order to be accurate, measurements must be completely neutral, and their only purpose should be to signal to a human, perhaps a senior, that something is wrong. Then the human can intervene, check the whole process and make decisions on how to remove the issue.