0 to 1 month: Inadequate eye accommodation and convergence cause infants not to attend to objects within arm reach {cognition development, 0 to 1 month}. During first month, infants can pursue objects with eyes and head. Babies less than a month old can imitate facial expressions. Over first weeks, infants learn to recognize individuals by voice. According to Piaget, infants have reflex schemas, such as sucking and grasping.
0 to 4 months: Infants less than 16 weeks old look at positions, not at objects {vision development, 0 to 4 months}. They do not know size, shape, or color. They can follow movements. They believe that moving objects differ from stationary objects. They believe that objects are solid and permanent.
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Date Modified: 2022.0225