Peer feedback is a core skill for collaboration. It’s impossible to work closely with out running into some bumps: differences, disappointments, and disagreements. Peer to peer feedback can help keep working relationships on track and improve results (and it keeps the manager out of the transaction so it doesn’t be come a *big deal*).
I teach about feedback in both my team collaboration workshop and management workshops. “But does it work in the real world?” some ask. Ola Ellnestam blogs How I Learned about Feedback.