Self reviews. They're stupid and people aren't good at it.

Just tell me how I did.

Your performance review shows sign of under achieving, as a result you will now have reduced hours and expected to do twice the work.

I don't necessarily disagree, but self reflection is a good skill to have

Agreed, but you've got to play the game to get ahead it seems. I can't imagine other trades (builders, plumbers and the like) going for this though. Must be something about office working and tiered management structures that puts all this in place. Too many jobs involve dreaming up these processes imo, not enough creating product.