Student Contributor: S. Dianda
Signal Interference is a nonverbal Intervention that communicates that a behavior is not appropriate. It is helpful during instruction, because it lets the student who is misbehaving know that their behavior is not ok, yet it does not cause distraction to the rest of the class.
Signal interference acts a a cue that warns students who are showing unwelcome behavior to stop that behavior. If done correctly, the lesson does not need to be interrupted to do this. Its distraction to the other students is minimal. Simply making eye contact with the disruptive student, a slight head shake, a hand signal, or placing your fingers to your lips in a hush motion are all examples of signal interference.
Signal Interference is a tool use in the Corrective phase, because it is something that is stopping unwanted behavior in class. It is after bad behavior has begun so it is not a preventative measure and it is not supportive, because it is correcting the behavior. The theories of Influence this falls under is all three of them. They types of signals can vary but any type of teacher can use this method effectively to maintain a smooth running classroom with few distractions.
More Information –
Tool Source: Levin & Nolan,2014, p. 210