It uses a stimulus before a reflex to see how the reflex is affected. My roommate would not change his behavior with the use of classical conditioning because it uses involuntary actions. My roommate voluntarily leaves his dishes next to his bed. If I wanted my roommate to change the habit and wash the dishes I will have to use operant conditioning. Operant conditioning the act of reinforcing or punishing behavior to strengthen or weaken voluntary actions.
My roommate has been doing this since the beginning of the semester before the intervention. I hope that after the intervention he starts being more conscious of it and drops it to three times a week. Lucky for me, my roommate also has a low self-esteem and loves compliments. I will compliment him every time he does the dishes without being asked to. If he were to forget I will withhold the compliment and tell him to do the dishes without any praise. This will cause him to associate the good feeling from praise to doing the dishes without being asked