Difference between 偏見，偏私，and 偏心？ 偏見，偏私，and 偏心 all seem to mean biased in some form or another.

Is there a difference among the three, or are they interchangeable?
偏见 is bias of opinion or concept on different groups, like race groups or religion groups.

偏心 is bias of love on different persons, like children.

偏私 is more used in ancient Chinese and it means bias on people or group to which the subject belongs.