Piaget's theory of developmental psychology. Intelligence is developmentally constructive in the mind of the learner and moves from concrete to abstract stages of understanding. Vygotsky's theory of structural mediation. Intelligence is a function of activity mediated through material tools, psychological tools, and other human beings. Feurerstein's theory of structural cognitive modifiability.
Intelligence is a function of experience and can be changed through guided mediation.
Gardner's theory of multiple intelligence. Sternberg's successful intelligence. Intelligence is triarchic, with analytic, creative, and practical components that need to be balanced. Perkins' theory of learnable intelligence. Intelligence is made of neural, experiential, and reflective components that help us know our way around the good use of our minds.