ABSTRACT
The results of the foregoing studies show that instead of being immediately apprehended, movement and speed give rise to a long elaboration of responses at first sensori-motor, then intuitive and finally operational. These operations themselves commence with a system of qualitative 'groupments' before resulting in (extensive and above all metrical) quantitative groups. The concern of these conclusions is to give a total view of this development (setting aside purely perceptual questions), and to correlate this with the other closely related evolution studied in a complementary work: that of the conception of time.
