Your cat is fat, so you buy it a "Slim Cat" feeder that requires the cat to play with the feeder to get its food (http://store.petsafe.net/slimcat-interactive-feeder). Until you bought the "Slim Cat", the cat's food was kept in a cupboard with a squeaky door; before the "Slim Cat" you were always opening this cupboard immediately before feeding the cat. You notice if the cat is playing with the "Slim Cat" and you open this squeaky cupboard there is a large increase in the cat's interactions with the ball. Describe the critical factors of the instrumental conditioning in this situation. What effect is responsible for the cats increased responsiveness to the "Slim Cat" when you open the cupboard