During the stage of infancy (birth to 2 years old) Both authors, go through the process of acquisition of the symbolic capacity, and examine the following: the differentiation between subject and object; the understanding of object permanence and the subsequent representational skill, which is deeply related to the idea that an object exists independently of the child; and the potential of symbolic thinking on allowing behavior regulation on the basis of the represented goal and on understanding that other people may have goals differing from one’s own. Concerning the differentiation between subject …show more content…
Piaget suggested that cognitive development occurs following a series of stages of maturation and experience: sensory-motor, preoperational, concrete operational and formal