People frequently need to cooperate despite having strong self-serving motives. In the current study, pairs of 5- and 7-year-olds (N = 160) faced a one-shot coordination problem: To benefit, children had to choose the same of 3 reward divisions. They could not communicate or see each other and thus had to accurately predict each other's choices to…

Reputational concerns are known to promote cooperation. Individuals regularly act more prosocially when their behavior is observable by others. Here, we investigate 4- and 5-year-old (N = 144) children's reputational strategies in a competitive group setting. The aim of the current study was to explore whether children's sharing behavior is…

Ownership is a cornerstone of many human societies and can be understood as a cooperative arrangement, where individuals refrain from taking each other's property. Owners can thus trust others to respect their property even in their absence. We investigated this principle in 5- to 7-year-olds (N = 152) from 4 diverse societies. Children…

Children encounter moral norms in several different social contexts. Often it is in hierarchically structured interactions with parents or other adults, but sometimes it is in more symmetrically structured interactions with peers. Our question was whether children's discussions of moral norms differ in these two contexts. Consequently, we had 4-…

Property as a social "agreement" comprises both a communicative component, in which someone makes a claim that she is entitled to some piece of property, and a cooperative component, in which others in the community respect that claim as legitimate. In the current study, preschool children were (a) given the opportunity to mark some…

Much is known about young children's use of deictic gestures such as pointing. Much less is known about their use of other types of communicative gestures, especially iconic or symbolic gestures. In particular, it is unknown whether children can create iconic gestures on the spot to inform others. Study 1 provided 27-month-olds with the…

Recent evidence suggests that 3-year-olds can take other people's visual perspectives not only when they perceive different things (Level 1) but even when they see the same thing differently (Level 2). One hypothesis is that 3-year-olds are good perspective takers but cannot confront different perspectives on the same object (Perner, Stummer,…

The present study investigated young preschoolers' proportional allocation of rewards in 2 different work contexts. We presented 32 pairs of 3.5-year-old peers with a collaborative task to obtain rewards by pulling ropes. In order to establish differences in work input, 1 child's rope was not immediately accessible but had to be retrieved from the…

Although a fair amount is known about young children's production of negation, little is known about their comprehension. Here, we focus on arguably the most complex basic form, denial, and how young children understand denial, when it is expressed in response to a question with gesture, single word, or sentence. One hundred twenty-six children in…

Three-year-old children saw an adult displaying the exact same distress in 3 different conditions: (a) the adult's distress was appropriate to a genuine harm, (b) the adult's distress was an overreaction to a minor inconvenience, and (c) there was no apparent cause for the adult's distress. Children who witnessed the adult being appropriately…

Young children struggle in the classic tests of appearance versus reality. In the current Study 1, 3-year-olds had to determine which of 2 objects (a deceptive or a nondeceptive one) an adult requested when asking for the "real X" versus "the one that looks like X." In Study 2, children of the same age had to indicate what a single deceptive…

Human cooperative communication involves both an informative intention that the recipient understands the content of the signal and also a (Gricean) communicative intention that the recipient recognizes that the speaker has an informative intention. The degree to which children understand this 2-layered nature of communication is the subject of…

When adults make a joint commitment to act together, they feel an obligation to their partner. In 2 studies, the authors investigated whether young children also understand joint commitments to act together. In the first study, when an adult orchestrated with the child a joint commitment to play a game together and then broke off from their joint…

Displaying guilt after a transgression serves to appease the victim and other group members, restore interpersonal relationships, and indicate the transgressors' awareness of and desire to conform to the group's norms. We investigated whether and when young children are sensitive to these functions of guilt displays. In Study 1, after 4- and…

Fourteen- and 18-month-old infants observed an adult experiencing each of 2 objects (experienced objects) and then leaving the room; the infant then played with a 3rd object while the adult was gone (unexperienced object). The adult interacted with the 2 experienced objects in 1 of 3 ways: by (a) sharing them with the infant in an episode of joint…