mean a strong inclination of the mind or a preconceived opinion about something or someone.
may be favorable or unfavorable;
e.g. Bias in favor of or against an idea.
implies a preformed judgment even more unreasoning than bias, and usually implies an unfavorable opinion; e.g. Prejudice against a race.
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is a prejudice in a general or specific sense, usually in the sense for having a preference to one particular point of view or ideological perspective. However, one is generally only said to be biased if one's powers of judgment are influenced by the biases one holds, to the extent that one's views could not be taken as being neutral or objective, but instead as subjective. A bias could, for example, lead one to accept or deny the truth of a claim, not on the basis of the strength of the arguments in support of the claim themselves, but because of the extent of the claim's correspondence with one's own preconceived ideas. This is called confirmation bias.
is, as the name implies, the process of "pre-judging" something. It implies coming to a judgment on a subject before learning where the preponderance of evidence actually lies, or forming a judgment without direct experience. Holding a politically unpopular view is not in itself prejudice, and politically popular views are not necessarily free of prejudice. When applied to social groups, prejudice generally refers to existing biases toward the members of such groups, often based on social stereotypes; and at its most extreme, results in groups being denied benefits and rights unjustly or, conversely, unfairly showing unwarranted favor towards others.
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