Which of the following best defines extinction in behavior modification?

The definition of extinction in behavior modification is best understood as the discontinuation of reinforcement for certain behaviors. When a behavior that has been previously reinforced no longer receives reinforcement, the likelihood of that behavior occurring in the future decreases. This principle is grounded in the understanding that reinforcement strengthens behaviors, so removing it leads to a reduction in those behaviors over time.

In practical terms, extinction involves identifying a behavior that you wish to reduce and then stopping the reinforcement that has maintained that behavior. For instance, if a child typically receives attention (a form of reinforcement) whenever they engage in a particular disruptive behavior, ceasing to provide attention when that behavior occurs can lead to a decrease in the disruptive behavior.

This concept is crucial in various settings, such as therapy, education, and behavior management, as it helps practitioners understand how to effectively reduce unwanted behaviors through the intentional withdrawal of reinforcing consequences.