Plus-Delta (+Δ) Feedback

Feedback that begins with an appreciation (+) makes any subsequent suggestion for change (Δ) more likely to be heard and taken up. It also has an effect on the people giving such feedback, which is to shift us away from being consumers or critics and make us collaborators or supporters of the ongoing development of the recipient of our feedback.

+Δ Feedback can be given verbally and quickly—thus more regularly—at the end of sessions in a go-around or check-out in which each person contributes only one + item and one Δ item.

+Δ Feedback can also be used for self-evaluation. For this you need a set of objectives and for each you state a + (something you did well) and a Δ (some way to improve/develop).