“When we meet someone, we form a first impression (“He seems like a really nice guy”), frequently with no apparent information on which to base it. This is because attributes of the person evoke in us something we’ve previously categorized as familiar and positive. The opposite can happen (“This guy is a complete jerk”) if some attribute taps into a previous negative experience. Our brain catalogs vast amounts of input from our family, community, and culture, along with what is presented to us in the media. As it makes sense of what it’s stored, it begins to form a worldview. If we later meet someone with characteristics unlike what we’ve cataloged, our default response is to be wary, defensive. In turn, if our brains are filled with associations based upon media-driven biases about ideal body type, or racial or cultural stereotypes, for example, we will exhibit implicit biases (and maybe overt bias).”