You can't. Any more than one can research without 'Confirmation bias'.
Psychology is presently deemed a science .... that is due to it's origins and need to fit into the status quo of subjects being taken seriously at the time.
It is becoming apparent to many of the professionals who are involved in present day research that the definition of psychology being deemed a 'science' is holding it back from achieving many understandings.
As with all academically researched subjects, the problem is 'peer approval', without that approval one is soon sidelined, but when the people who are in control of the major 'praise' are of the 'old school' then change is painfully slow.
In 100 yrs time psychology will look different, but it'll take that long in generational changes to create the new outlook where 'reflexivity' is acceptable along with 'science'.
My wife is a renowned Dr of Psychology ... One should be careful of internet pundits and the little view from their window.