In the current study, perceived friendlessness at T1 was linked to less prosocial behavior, but not concurrently to more antisocial behavior, when compared to children with low antisocial/high prosocial friends. In terms of these findings, this group of children behaves similarly to the “friendless” children described in studies of friends’ influence among older children and adolescents. In one study, early adolescents with deviant friends were found to be more delinquent than youth with non-deviant friends and friendless youth. However, there was no difference in delinquency between friendless adolescents and adolescents with non-deviant friends (Brendgen et al., 2000). Similarly, another study found that chronically friendless children in grade 5 demonstrated lower levels of peer-reported social competence and prosocial behavior than other children, but were not viewed by their peers as more aggressive (Wojslawowicz Bowker, Rubin, Burgess, Booth-Laforce, & Rose-Krasnor, 2006). Children without close friends are perhaps less antisocial due to a lack of peer modeling and/or reinforcement of antisocial behavior. At the same time, given that the current findings suggest that prosocial preschoolers affiliate with one another, a lack of highly prosocial friends may be a result of these children engaging in less prosocial behavior themselves. However, the extent to which adjustment outcomes for young children who nominate no best friends are the same as for children regarded as friendless on the basis of other measures (e.g., observation, peer and teacher report) is not clear from the current findings, and requires further investigation.