Themis is a wanderer. Instead of sitting at the work area, dining table, or any other designation that requires sitting, Themis floats from one location to another, which makes it very difficult to engage her in tabletop activities such as sorting or eating. Her team decides to reinforce her for every 10 seconds she is sitting down, and gradually increases the length of time until they are providing reinforcement once every hour. What intervention is being implemented?Explain