Which behavioral modification technique involves using a desirable activity to reinforce a less desirable one?

The Premack Principle is a behavioral modification technique that posits that a more probable or desirable behavior can be used to reinforce a less probable or less desirable behavior. This principle operates on the idea that individuals will engage in a preferred activity if it leads to the opportunity to engage in a less preferred activity afterward. For instance, if a child enjoys playing video games more than doing homework, allowing the child to play video games only after completing their homework can make the homework completion more likely.

In contrast, shaping involves gradually reinforcing behaviors that approximate a desired behavior, while planned ignoring entails deliberately not responding to certain behaviors in order to decrease their occurrence. Corporal punishment involves physical discipline, which is not a reinforcement strategy aligned with positive behavior modification principles. Thus, the Premack Principle stands out as the correct answer because it clearly illustrates how a preferred activity can motivate engagement in a less desirable task.