Answer:
Confirmation bias
Step-by-step explanation:
Confirmation bias refers to the tendency to search for information that affirms our own previous hypotheses. This kind of bias also appear when people look out for information selectively and tend to forget information and not gather information that doesn't confirm their previous hypotheses.
Therefore, the tendency of people to persist in their beliefs about pseudoscience is due to the tendency to search for information that supports their PREEXISTING beliefs while not looking for information to disprove it is a good example of Confirmation bias.