“…Here, we focused on two social characteristics that have previously been shown to guide children's responses: niceness and similarity. Although there are innumerable ways that children may consider themselves as similar to others (for review, see Liberman, Woodward, & Kinzler, ; and see Discussion for more on this issue), we conveyed similarity based on shared preferences given past research suggesting that this dimension of similarity is recognized and appreciated in similar ways to the dimension of niceness. For example, before they celebrate their first birthday, infants prefer nice individuals (Buon et al., ; Hamlin & Wynn, ; Hamlin, Wynn, & Bloom, ; Scola, Holvoet, Arciszewski, & Picard, ) and individuals who are helpful toward nice individuals (Hamlin, Wynn, Bloom, & Mahajan, ).…”