Face perception

Close friends become absorbed into our self-concept, affecting our ability to distinguish their faces from our own

When we say that our close friends have become a part of us, we’re usually talking metaphorically. Yet prior research has shown there is a literal sense in which this is true. For instance, we’re slower at judging whether given personality traits apply to us or our friends, compared with when judging whether traits belong to us or someone we’re not close to – it’s as if our friends’ traits and our own have somehow become shared, which makes the judgment trickier. Similarly, in terms of brain activity, we respond to mistakes made by friends in a similar way to how we respond to our own mistakes. ….[READ]

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