Chapter 1. The Development of Mental Actions and the Orienting Basis of Actions.- Chapter 2. The Phases of the Development of Mental Actions.- Chapter 3. The Conditions for the Development of the Properties of the Action.- Chapter 4. The Process of Internalisation. Theoretical and Practical Implications of the Study on the Phases of the Development of Mental Actions.- Chapter 5. Psychological Grounds of the Development of Ideal Actions and Concepts.- Chapter 6. Development of Sensory Images.- Chapter 7. Development of Physical Actions.- Chapter 8. Psychological Grounds of the Process of Automation.