PSYCH 3400 Lecture Notes - Lecture 14: Noam Chomsky, Subitizing, Joint Attention
Document Summary
Core system 1: approximate representation of numerical magnitude: about 5 months. After seeing three dots on a screen, they look preferentially at a screen showing four dots: 6 months. Infants can discriminate items differing by a 2:1 ratio but not by a 3:2 ratio: 10 months. Infants succeed both at the 2:1 and the 3:2 ratio. Any skill related to understanding feelings and negotiating interpersonal interactions. At 6 month of age, even infants can understand inanimate objects. When 18-month-olds see a person apparently try, but fail, to pull off a dumbbell, they imitate pulling the ends off: the action the person intended to do, not what the person actually did. They do not imitate a mechanical device at all. Infants who see a human arm repeatedly reach for an object in the same location assume that the action is directed toward the object, not the place.
