What leads groups to arrive at poorer decisions than they
could have?
GROUPTHINK
a psychological phenomenon that occurs within a group of people, in which the desire for harmony or conformity in the group results in an irrational or dysfunctional decision-making outcome.
Wikipedia
HAPPY TALK
occurs when group members say that all is going well and likely to go even better—that there is nothing to worry about
NEGATIVE TALK
occurs when group members complain that all is going down and is likely to go even worst. But there is just full agreement and no action.
CONFLICT
WHISTLEBLOWERS
WHISTLEBLOWERSblow their whistle
against WILLFUL BLINDNESS
WILLFUL BLINDNESSBeing unaware of things we should really be aware of;Things we need to know