Short-term familiarity shapes social preference but not word learning in preschoolers
Children learn language in social environments shaped by interactions with caregivers and other adults. Prior research suggests that even brief familiarity with a social partner can facilitate some types of learning, but it remains unclear whether short-term familiarity influences children's word learning. Across two studies, we examined whether short-term familiarity with an experimenter affected children's performance on a novel-label generalization task. In Study 1, younger children (22–37 months) were taught and tested by an experimenter with whom they had completed a 10-min interactive free-play session or a different unfamiliar experimenter. Children performed similarly in the familiar and unfamiliar conditions, and a Bayes-factor analysis provided moderate evidence favoring no difference between conditions. In Study 2, older children (49–69 months) completed blocked training-testing with both familiar and unfamiliar experimenters and a resource-allocation measure of social preference. Children showed a social preference for the familiar experimenter, but their generalization performance did not differ significantly between experimenters; the Bayesian evidence regarding a familiarity effect was inconclusive, although it favored no difference. Together, these findings suggest that brief familiarity can shape children's expressed social preference without producing a corresponding measurable advantage on a structured word-generalization task with equivalent linguistic input.
Jina Ahn, Erica A. Cartmill, Catherine M. Sandhofer