Obras Escogidas I is a key compilation of the most representative writings of Lev Vygotsky, one of the most influential psychologists of the 20th century. In this first volume, essential texts are included that explore his theories on human development, the role of language in cognition, and the interaction between the individual and their social context. Through his research, Vygotsky introduces his sociocultural theory, which argues that learning and child development are deeply influenced by social interactions and cultural tools. The book is fundamental for understanding concepts such as the "zone of proximal development" and the crucial role of language in thinking. This collection is crucial for psychologists, educators, and students interested in developmental psychology, pedagogy, educational philosophy, and cognitive theory. Vygotsky's writings continue to serve as a key reference for understanding the relationship between the individual and their social environment in the p