objective
adjective
1 an interviewer must try to be objective:
impartial, unbiased, unprejudiced, non-partisan, disinterested, non-discriminatory, neutral, uninvolved, even-handed, equitable, fair, fair-minded, just, open-minded, dispassionate, detached, impersonal, unemotional, clinical.
▷antonyms biased, partial, prejudiced.
objective Oxford Dictionary of English