Answer:
Socio-cultural theory of cognitive development.
Explanation: The Russian psychologist Vygotsky's theory is a milestone and the basis of constructivism. He felt that social learning precedes development. He explains that "every function in child's cultural development occurs twice, firstly, on social level(interpsychological) and secondly, on individual level"(intrapsychological). Thus, when Xavier modifies the poetic techniques he is reflecting Vygotsky's instructional principle of cognitive development according to which child constructs knowledge actively. He says cognition and consciousness are the by-products of socialization.