
Critics have noted its similarity to the Vygotsky's ZPD and in later papers David Wood refers more to that. too much.ideally the child should be asked to add one extra operation or decision to those which he is presently performing". Confusingly, David Wood also has a term called the "region of sensitivity to instruction", which is circularly defined as the most effective level of instruction which "required the child to do more than he is immediately capable of.

Vygtosky's zone of proximal development (ZPD) , describes the difference between what a learner can do alone and with the help of a more able individual, although he did not go into as much depth into the didactic process, which scaffolding describes. Zone of Proximal Development and related concepts

Reducing degrees of freedom in a task (the number of acts needed to reach a solution), to the level that the learner can manage, and reducing the level of instruction when the learner improves.Recruitment of leaner's interest and concentration.In Wood et al.'s initial formulation, scaffolding consisted of various instructional behaviors, such as : Scaffolding (sometimes known as instructional scaffolding) was first coined by David Wood, Jerome Bruner & Gail Ross, where the researchers were exploring the dyadic relationship between a learner and a tutor in problem solving.
