Solus, the last ten or eleven years, those of us on salary were required to do our own reviews, then the management would determine if our opinions of our performance were in line with their's! The system really sucked...
I asked my brother, who worked for GD for 37 years, from entry level engineer (Navy FTB1) to middle management. He said that companies adopted this practice because most people would under rate their own accomplishments thereby giving management a reason to lower the percentage of pay increases and bonuses. Whether that's true is unknown..
Glad to not have to deal with this crap anymore.