Suppose Kara spends more time playing outside than she does cleaning her room. Kara's mother decides to allow Kara to play outside only if she cleans her room first. Kara's mother is applying , which states that she can use the chance to perform a frequent behavior to reinforce a less frequent behavior.

the premark principle

Explanation:

In simple words, The Premack Theory suggests more likely habits will perpetuate less likely behaviours. Premack's Theory implies that if a individual wants to carry out a certain task, the individual must carry out a less acceptable task to even get to the most favourable operation; that is, actions that themselves being reinforcing. An person would be more likely to undertake a single task if he assumes as a result that he would take part in a more rewarding activity.

can you explain it better