A bias is a strong inclination of the mind or a preconceived opinion about something or someone. Most of the time, biases occur on a subconscious level and people aren’t even aware they have them. But everyone still holds biases; it’s simply human nature to be partial toward certain things and not toward others, for a multitude of reasons. A lot of biases can be good, like being partial toward initiatives that help children from low-income families. Some can be neutral, like preferring to read New York Times bestsellers instead of The Wall Street Journal. And some biases are generally considered negative, like racial, age, cultural, and gender biases.