The praxiological significance of this article lies within the analysis and classification of relevant aspects of the emotional intelligence development during preadolescence. Accordingly, the focus has been set on determining the development process of emotional intelligence during preadolescence, of knowledge and own skills assimilation of this psychological construct, as well as the identification of the determining factors. Preadolescence is the period of great changes at biological, cognitive, and social experiences levels, and EQ’s development has solid implications in human communication, inter-personal relationships and more, being a capacity with profound social implications. Emotional intelligence is seeded and developed throughout the entire life, and it allows to show our intellectual capabilities and our creativity, assuring success both in personal and professional life.