Prior research suggests that preschoolers can generalize object properties based on category information conveyed by semantically-similar labels. However, previous research did not control for co-occurrence probability of labels in natural speech. The current studies re-assessed children's generalization with semantically-similar labels.…

In three experiments, children listened to a story and were asked to repeat "the last word" or "the last thing" they heard. Found that children as young as 4.5 to 5 years treat both open and closed categories as words and clearly differentiate between words and things, contradicting the notion that children cannot focus on…