Subjectivity refers to how someone’s judgment is shaped by personal opinions and feelings instead of outside influences. Subjectivity is partially responsible for why one person loves an abstract painting while another person hates it.
Since a subject is a person, subjectivity refers to how a person's own uniqueness influences their perceptions. For example, if you have six sisters, that might influence how you view women or families — it's part of your subjectivity. Subjectivity is a form of bias and also individuality. Subjectivity is the opposite of objectivity, which is based purely on the facts and isn't personal. We expect judges to put aside their subjectivity and make decisions based on objectivity.