At Le Day Job, I've created a role-play exercise, CRITIQUE THIS ELEPHANT, to teach better design critique skills to my coworkers.
Half the group were designers with a design to be critiqued (in this case an incorrectly drawn elephant). The other half were critics. Each critic had instructions to embody a bad critiquing practice. We then roleplayed critiquing the elephants, with a facilitator correcting the critics on unhelpful feedback.
Anyone else used roleplay to train coworkers?