The US scientist Justin Kruger describes this behavior as a "first instinct fallacy". For his study in 2005, test persons should imagine revising decisions. And Kruger noticed that the feeling of regret plays an important role. Most of the test persons believed that they would regret it much more if they converted an originally correct answer into a wrong one. In other words, they remained afraid of doing something wrong, preferring the first choice. Addition: Philosoph Francis Bacon 1620 Once the human mind has accepted an opinion, it draws on everything to confirm it and to agree with it. And even if more and far better evidence offers itself for the opposite, it will ignore it with great and harmful bias, condemn it or regard it as irrelevant by subtleties, so that the authority of its first assumption remains undiminished.