Answer :
Answer: differential reinforcement (DR) procedure
Explanation: Functional communication training (FCT) is a method used to teach individuals with severe behavioral problems acceptable behaviors by reinforcing alternative behaviors. It is a form of Differential Reinforcement.
FCT sees behavior as a way of communication and is appropriate for people with learning disabilities or speech difficulties. FCT establishes the factors in the individual’s surrounding that is enforcing the undesirable behavior then designing a new response which is acceptable to the factor or event.
For example if a student screams when he does not understand a question or topic in class, a teacher may teach him a simple sentence or sign language which serves as an alternative way to express his confusion.