 Hi, Brad here. This video is over abolishing operation. This is a motivating operation that decreases the reinforcing effectiveness of a stimulus or an item or something you do. So an example would be like I crave donuts on Friday. If I eat all the donuts really early Friday morning, by noon I really don't want any more donuts. Another example would be going on to a party, meeting a lot of people, a lot of social interaction, and then the following day you don't feel like going out to another party because you're tired of talking to people.