Associative Learning in "A Clockwork Orange"

In the movie "A Clockwork Orange", Alex saw the treatment in prison as an opportunity to escape the walls of the jail and back into society. Instead, the doctors made Alex a prisoner within himself. Once the doctors had control of Alex they conditioned him however they pleased by using associative learning. The doctors were able to train Alex to force a connection between nausea and any malicious activity. So, whenever Alex thought about violence or the "old in-out" he was immediately struck with a feeling of complete sickness  (http://www.youtube.com/watch?v=P-JAhY6eT3c ). This is similar to Pavlov's experiments with dogs. Through a series of trials Pavlov trained dogs to salivate whenever a bell was sounded. He did this by associating a bell with eating. Whenever a bell was sounded the dogs would get food. Alex's treatment was much more harsh and included drugs that forced him to be sick. His whole life before the treatment was based in sex and violence and when they were taken away from him he had nothing else to turn to, not even his family.