A fascinating recent study has shown that a single, toxic team member can create group team wide dysfunction and breakdown. We have all worked in teams where there is one “difficult” person. They seem to take up a disproportionate amount of the teams time and energy. Conversations with them feel “heavy” and they tend to sap your energy. There are a number of manifestations of this phenomenon, from the passive-aggressive group eroder, the blunt/rude dominant, the controller, the slacker, the anti-establishment guy, the divide-and-conquer schemer, the arrogant fat head… I am sure some of these will be familiar.