From our point of view, a child undergoes successive reconstructions of his image in the course of his development. These reconstructions should take place in stages formally identical. We studied the evolution of the self-image by means of a distorting mirror, which depending on its surface curvature, produces fattening or slimming distortions of the face. Two samples have been studied: eighty children from 3 to 6 year of age, and hundred and forty aged from 6 to 11. The aim of the design is to determine to which degree the subjects are affected in the choice of their objective image through different initial distortions of the mirror.