This paper presents and studies the first translation to Portuguese of "Methods for investigating concepts" (1928), by LS Sakharov, classic text of cultural-historical psychology. The article was organized in four parts, explaining: translation problems; the relationship between the author and his time; discussion of methods for investigating concepts/giftedness; the object, material and investigation procedures developed by Sakharov in relation with Vygotsky's work. We also discuss the criticism, replication, and impact of the functional method of double stimulation (or method of Sakharov), presented in the translation.
functional method of double stimulation; concept formation; method of Sakharov; cultural-historical psychology; Leonid Solomonovich Sakharov (1900-1928)