Positive Reinforcement: Positive reinforcement is a process where desirable behaviors are encouraged by adding something pleasant or rewarding. For example, giving praise or rewards like gold stars for good behavior.
Extinction: Extinction occurs when a previously reinforced behavior no longer results in the desired outcome. In this case, if the teacher stops using gold stars for good behavior and doesn't replace it with any other form of reinforcement, the students may stop exhibiting those positive behaviors.
Shaping: Shaping is a technique used to gradually guide individuals towards exhibiting desired behaviors by reinforcing successive approximations of the target behavior. In this context, it could involve rewarding small steps of improvement toward consistently demonstrating good behavior.