The normalcy bias, or normality bias, is a mental state people enter when facing a disaster. It causes people to underestimate both the possibility of a disaster and its possible effects, because it causes people to have a bias to believe that things will always function the way things normally function. This may result in situations where people fail to adequately prepare and, on a larger scale, the failure of governments to include the populace in its disaster preparations.
The assumption that is made in the case of the normalcy bias is that since one has never personally experienced a disaster, one never will. It can result in the inability of people to cope with a disaster once it occurs. People with a normalcy bias have difficulties reacting to something they have not experienced before. They also tend to interpret warnings in the most optimistic way possible, seizing on any ambiguities to infer a less serious situation. Normalcy bias is essentially a “desire for the status quo.”
Source: News Now