The article observes studies of word categorization in 3- to 4-months-old infants questioning their main conclusion that young infants may categorize words themselves. The review shows that there is no bilateral communication between them and adults as well as any perceptual interaction that can help infants acquire language. And yet language…

In one form of category-based induction, people make predictions about unknown properties of objects. There is a tension between predictions made based on the object's specific features (e.g., objects above a certain size tend not to fly) and those made by reference to category-level knowledge (e.g., birds fly). Seven experiments with artificial…