This is Volume XXII of thirty-two on a series of Developmental Psychology. Originally published in 1958, this text offers a translation from French of an essay on the construction of formal operational structures to explain part of the growth of logic in a child's brain and development. It looks at propositional logic, the integration of formal thought and the operational schemata of formal logic.

part 2|138 pages

The Operational Schemata of Formal Logic

chapter 9|15 pages

Communicating Vessels1

chapter 10|16 pages

Equilibrium in the Hydraulic Press1

chapter 11|18 pages

Equilibrium in the Balance1

chapter 12|17 pages

Hauling Weight on an Inclined Plane1

chapter 13|11 pages

The Projection of Shadows1

chapter 14|14 pages

Centrifugal Force and Compensations1

chapter 15|19 pages

Random Variations and Correlations1

part 3|108 pages

The Structural Integration of Formal Thought

chapter 17|62 pages

Concrete and Formal Structures

chapter 18|17 pages

Adolescent Thinking