What differentiates Discrete Trial Teaching (DTT) from Incidental Teaching (IT)?

The distinguishing feature of Discrete Trial Teaching (DTT) is that it occurs in a highly structured environment where specific tasks are presented systematically. In DTT, sessions are usually designed with prearranged reinforcers that are given immediately following the desired response, which reinforces the learning experience. This method allows for clear learning objectives, where each trial consists of an antecedent (instruction), a response (the child's action), and a consequence (the reinforcement).

In contrast, Incidental Teaching (IT) is more flexible and child-centered, focusing on teaching moments as they arise during naturalistic interactions. IT relies on the child's interests and initiations rather than a structured sequence of trials. This spontaneity makes it different from the systematic teaching approach seen in DTT.

Understanding this framework helps clarify why option B is the best choice, as it highlights the structured environment and the prearranged reinforcers integral to DTT.