Losing Sight of the Real You
First impressions are, as the oft-repeated advice goes, very important. The strength of these first impressions is intimately tied to the degree of cognitive/emotional weight given to a situation. As noted above, that weight is shifted and focused more fully based on ideologies that parse people into singular identities, rather than whole people who contain multitudes. That said, seeing a random person on public transit will not generate many associations and you likely won’t remember them if you were to see the person later. If, however, they had been belligerent to you personally, or had engaged in behavior deemed bizarre, then later there’d be a quick judgment applied. Also, a random person will generate weaker associations than someone you’re interviewing for an important job or who shows up to take your kid out for a romantic date.
In other words, information we get about a person early in our observation of them influences how we interpret and remember everything that comes after.Psychology Today
Early impressions are within the same mental spectrum of bias, but they’re stronger precisely because they’re fed by other biases and themselves become one. Indeed, first impressions are encouraged to be especially defining because they’re so often associated with one’s intuition, a form of knowing felt to be pure.
Importantly here is recognizing that, whatever the limitations of first impressions may be, the influence is ongoing. We will actively interpret a person’s behavior, not based on the intent of that person, but on the story we already have of them. Further, our memory will follow suit, selectively recalling the information that fits that story as well.