Mr. Jones is a 21 yo college student who drinks alcohol to the point of black out around 2 weekends per month. He had to go to the ER “to get his stomach pumped” last year, and has gotten in several fights while intoxicated, causing a girlfriend to dump him and his previous roommates to ask him to move out. He will usually start the night telling his friends that he wants to cut down on his drinking and will only have “a couple beers” but by the end of the night he has usually had 10 or more drinks. When he started drinking alcohol at age 15, 1-2 drinks would make him tipsy – now he finds that he requires 4-6 drinks to “get buzzed”. He used to play Ultimate Frisbee on Saturdays but now finds he is usually too hungover and has quit the league in order to spend his Saturdays recovering from Friday night. He has driven on several occasions after drinking, but has never had an accident. He also smokes marijuana a few times a year, usually when someone offers him a joint at a party. He has had no cravings or withdrawal symptoms for either marijuana or alcohol. His bloodwork and physical exam are normal.