A new personality formation which develops at the stage of the three years crisis has been studied. Given the name "achievement pride" it has three aspects covering, correspondingly, the system of relations to the world of objects, to other people, and to himself. In psychological terms the new development can be interpreted as appearance of a new vision of himself - through the prism of one's own personality, one's Ego, while the adult acquires the status of a judge of the achievements. The new formation gives the start to development of self-appraisal and of aspirations, and its appearance therefore is an important stage in the growth of self-comprehension.