Children's and adults’ social partner choices are differently affected by statistical information

The current study investigated how U.S. adults (N = 99) and 5- and 6-year-old children (N = 112) use statistical information in their social partner choices. We found that children integrated base rate information (the distribution of traits within groups) and individual-level statistical information (the frequency of an individual's past behaviors) in their partner choices, but adults only relied on the individual-level statistical information and neglected base rate information. In addition, adults and children were affected by non-statistical information: Adults showed risk-seeking and risk-averse tendencies, and children showed only risk-seeking tendencies in their partner choices. These findings provide evidence that both statistical and non-statistical information affect social decisions, and adults and children are influenced by each type of information in distinct ways. The current study suggests future directions to further investigate the role of statistical learning in our social cognition and to develop a unifying account of how non-statistical information interacts with statistical information in our social decisions.