I am not sure why you would want to, but just in case you ever did…
Perhaps understanding how helps you not to, because, just as with a healthy team environment, creating an unhealthy team environment doesn’t happen without intentionality. You’ll have to work at it.
Here are 10 ways to create an unhealthy team environment:
Make people question their role or performance on the team.
Avoid all conflict.
Pretend things are okay when they are not. In fact, exaggerate the positives and avoid the negatives.
Add rules that impact everyone, rather than dealing with the real issue.
Never applaud. Always critique.
Keep people wondering what the leader is really thinking.
Allow innuendoes, finger pointing and excuses to govern decision-making.
Hold mistakes against people rather than using them as a learning experience.
Limit control of decisions made to a few people.
Have no clear purpose for the team.