The mechanisms of perception

Primary illusions and the Law of Relative Centrations

Effects of centration

Perceptual activities and secondary illusions

Perceptual constancies and causality

Perceptions of movement, of velocity and of time

Difference, similarities and possible filiations between the structures of perception and those of intelligence

The perceptual or non-perceptual origins of the structures of intelligence

Conclusion: the epistemology of perception.