When groups have they are more likely to succumb to "groupthink."

When groups have pressure to conform or too much consensus, they are more likely to succumb to "groupthink."

Explanation:

Groupthink occurs when team members rely too much on decision consensus. They will rely on consensus at the expense of all other decision priorities, even above exercising good judgment. This can have negative consequences when the consensus reflects poor judgment or unethical or improper actions.  Groupthink occurs where there is an overestimation of the group or the individuals in the team are close-minded and also succumb to pressures of conformity. Sometimes this arises even just from a sincere effort to reflect the views of all group members.