Testing the functional basis of first impressions: Dimensions for children’s faces are not the same as for adults’ faces.

Despite warnings not to "judge a book by its cover," people rapidly form facial impressions. In Oosterhof and Todorov's (2008) two-dimensional model of facial impressions, trustworthiness, and dominance underlie impressions and primarily function to signal the potential threat of others. Here, we test a key assumption of these models, namely that these dimensions are functional, by evaluating whether the adult-face dimensions apply to young...