Personally, I think the focus here on cognitive biases in decision making is biased in that it distracts from many other factors (education, info sources, personality, mild mental psychosis, the level of caffeine and sugar in one's blood, etc). If it helps to shed any light on the Popper-ian process of scientific consensus, I'll offer my own anecdote with the suggestion that the process he hypothesizes affects much more than science:

I could not believe in 2006 that the Chicago Bears would lose to the Colts. Even though the Colts had previously beaten a scarier aerial attack at had a revamped defence, I thought the Bears would take it.

Whatever K.Popper was describing; I don't know how true it is, is some sort of vindictive ego judgement call that extends far. Scientists are only highlighted here because they are falsely expected to be rational. In reality, their research is rational, not the process where they weigh their research against the research of other scientists. The latter is contaminated by sociology of some sort.