preoperational stage

In the second, or preoperational, stage, roughly from age two to age six or seven, the child learns to manipulate his environment symbolically through inner representations, or thoughts, about the external world. During this stage he learns to represent objects by words and to manipulate the words mentally, just…

…to 2 years, (2) the preoperational stage from 2 to 7 years, (3) the concrete-operational stage from 7 to 12 years, and (4) the stage of formal operations that characterizes the adolescent and the adult. One of Piaget’s fundamental assumptions is that early intellectual growth arises primarily out of the…

The second period, known as preoperational, runs approximately from age two to age seven. In this period a child develops language and mental imagery and learns to focus on single perceptual dimensions, such as colour and size. The third, the concrete-operational period, ranges from about age 7 to age 12.…