Joaquin's parents have given his 2 year old daughter, Marie, a very noisy jack-in-the-box toy for her birthday. Marie loves to turn the crank and make the puppet pop up, over and over and over. Desperate to have some peace and quiet, Joaquin gives Marie a popsicle, which distracts her and produces the quiet he was craving. But when the popsicle is finished, Marie goes back to the toy, cranking and cranking. Joaquin tries another popsicle. What kind of reinforcement process is taking place in this situation?