I hesitate to agree with the author of this module that negativity is stronger that being positive; but I do totally endorse it's incredible dampening impact on any place, process or relationship.
When I have students that continually exhibit the "dark cloud sydrome" I usually call them in for a chat. I always let them vent first, because they usually do have some legitimate concerns; but once that is over I always ask them if they think their current attitude and actions are helping to change the situation.
Unfailingly, they admit that that isn't the case. After such a talk,… >>>