What Is Vertical Decalage?

Horizontal and vertical décalage are terms coined by developmental psychologist Jean Piaget. He is credited with delineating Piaget's stages of cognitive development: sensorimotor, preoperational, concrete operations, and formal operations.

What does Decalage mean in psychology?

By. Jean Piaget's theory of cognitive development about the invariant order that cognitive developments occur in. See horizontal or vertical decalage. DECALAGE: "Decalage is a French word meaning an interval or shift."

What is an example of horizontal Decalage?

Horizontal decalage the ability for a chilld to know that a piece of play dough has the same mass when it is in a ball shape and when it is in a sausage shape. It is not until two years later that children appreciate that the weight will remain the same as well.