Many of Vygotsky's works have been adulterated all around the world, including in Russia. In this article the trajectory of three books by the author including translations, in the Soviet Union, Russia and Brazil was analyzed in order to identify alterations that may lead to misinterpretation of Vygotsky's ideas and could make it difficult to understand the historical trajectory of his thought. Therefore, a comparison was made of different Russian editions and translations into other languages. Editions were found in which important sections had been eliminated, addition of chapters that did not exist in the original version and mistranslations of terms from Russian to Portuguese.
History Psychology; Vygotsky; Translating
