CHAPTER IV

MENTAL DEVELOPMENT AND MOTOR TRAINING

1. Factors determining the efficiency of the nervous system: Development and nutrition--Undeveloped cells--Development of nerve fibers. 2. Development of nervous system through use: Importance of stimulus and response--Effect of sensory stimuli--Necessity for motor

## activity--Development of the association centers--The factors involved

in a simple action. 3. Education and the training of the nervous system: Education to supply opportunities for stimulus and response--Order of development in the nervous system. 4. Importance of health and vigor of the nervous system: The influence of fatigue--The effects of worry--The factors in good nutrition. 5. Problems for introspection and observation . . . . . . . . . . . . . . . . . . . . . 50

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