Impact bias

The impact bias, a form of which is the durability bias, in affective forecasting, is the tendency for people to overestimate the length or the intensity of the impact of future feeling states.

In other words, people seem to think that if disaster strikes it will take longer to recover emotionally than it actually does. Conversely, if a happy event occurs, people overestimate how long they will emotionally benefit from it.

Daniel Gilbert theorized this bias, and proposed the name change to refer more broadly to all forms of emotional "impact", including durability as well as intensity, and the rate of ascension and descension, etc. Daniel Kahneman has also contributed research on this cognitive bias.