Piaget's Stages of Cognitive Development

Piaget proposed that all children pass through the sensorimotor, preoperational, concrete operational and formal operational stages in the same sequence, though not everyone reaches the final stage.

In developing his cognitive theory, Piaget engaged in significant intellectual debates, notably with contemporaries Susan and Nathan Isaacs.

The goal of the theory is to explain the mechanisms and processes by which the infant, and then the child, develops into an individual who can reason and think using hypotheses.

Piaget likely underestimated young children: when researchers removed the repeated question and the adult-led transformation from the classic conservation task, much younger children conserved correctly.

Piaget was employed at the Binet Institute in the 1920s, where his job was to develop French versions of questions on English intelligence tests.

Piaget's (1936, 1950) theory of cognitive development explains how a child constructs a mental model of the world.

Jean Piaget's theory describes cognitive development as a progression through four distinct stages.

Jean Piaget's theory describes cognitive development as a progression through four distinct stages.

Children actively build up their knowledge about the world. They are not passive creatures waiting for someone to fill their heads with knowledge.

Piaget held that cognitive development must precede learning. Vygotsky disagreed, arguing that 'learning is a necessary and universal aspect of the process of developing culturally organized, specifically human psychological function' (1978, p. 90).

The theory deals with the nature of knowledge itself and how humans gradually come to acquire, construct, and use it.

In 1919, while working at the Alfred Binet Laboratory School in Paris, Piaget was intrigued by the fact that children of different ages made different kinds of mistakes while solving problems.