Bias can influence research due to the view you have of a certain people, name, etc. because generally when someone has a view that they’ve had for a long period of time it won’t change unless confronted with something new and it takes the person who has that view to question their believe and the ones who taught them that then and only then will you put out something reasonable and actually start to learn instead of being stuck in yours way of “old ness” or non change. Hope this helped you
