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Abstract

Children must learn not to trust everyone to avoid being taken advantage of. In the current study, 5- and 7-year-old children were paired with a partner whose incentives were either congruent (cooperative condition) or conflicting (competitive condition) with theirs. Children of both ages were more likely to mistrust information spontaneously provided by the competitive than the cooperative partner, showing a capacity for detecting contextual effects on incentives. However, a high proportion of children, even at age 7, initially trusted the competitive partner. After being misled once, almost all children mistrusted the partner on a second trial irrespective of the partner’s incentives. These results demonstrate that while even school age children are mostly trusting, they are only beginning to spontaneously consider other’s incentives when interpreting the truthfulness of their utterances. However, after receiving false information only once they immediately switch to an untrusting attitude.