Blurred boundaries between us and them: Do young children affiliate with outgroup members with shared preferences?

Children tend to assume that their ingroup members are more likely to share their preferences than outgroup members, but group membership and shared preferences need not be congruent in reality. The current study investigated 76 3- to 6-year-old children's baseline intergroup attitudes in a minimal group context and their subsequent attitudes after being informed that either (a) their ingroup, but not their outgroup, shared their preferences or (b) their outgroup, but not their ingroup, shared their preferences. Cues about shared preferences affected children's intergroup biases to some extent, such that children tended to like their outgroup more and to allocate resources fairly among their ingroup and outgroup when they learned that their outgroup shared their preferences. However, intergroup biases were robust in some measures, such that children reported high ingroup liking and demonstrated ingroup favoritism in behavioral attribution regardless of whether they learned that their ingroup or outgroup shared their preferences. Children were also administered measures tapping into cognitive flexibility, but there was no coherent evidence that children's cognitive flexibility was related to their initial intergroup attitudes or their subsequent intergroup attitudes after learning that their ingroup or outgroup shared their preferences. The current study demonstrates a nuanced picture of intergroup biases, such that these biases might not be entirely entrenched but can nonetheless be robust in the face of conflicting cues about group membership and shared preferences. Furthermore, the importance of investigating intergroup biases at the individual level, rather than only at the group level, is discussed.