Situation
Carl is a junior in college.Over the last 12 months,he has spent his weekends drinking alcohol and playing poker.He does not drink on weekdays but occasionally uses "speed" if it is available to stay awake during the all-night poker games.He then takes Valium so that he can sleep during the day and be rested for the next night's game.Carl's friends are worried that Carl is hooked on drugs and that he can't stop,but Carl claims that he has no problem with his drug use.Carl boasts that he can drink more beer now than he could when he first came to college without becoming as intoxicated or having a hangover the next day.He dismisses the risks associated with mixing alcohol with other drugs like Valium,stating that only people who don't know what they are doing have problems.Carl attends his classes,although he has been missing the early Monday class and his overall grade-point average has dropped this semester.
-When Mike found that he had to use more of the marijuana to get the same relaxing state,he was experiencing
A)escalation.
B)tolerance.
C)loss of control.
D)reinforcement.

Question

Quizplus · Accepted Answer

Tolerance is the need to use more of a substance to achieve the same effect. In this situation, Mike needs to use more marijuana to achieve the same level of relaxation, indicating he has developed tolerance. Escalation refers to using increasing amounts of the substance over time, loss of control refers to being unable to control one's use of the substance, and reinforcement refers to positive consequences that may reinforce the use of the substance.

Situation Carl Is a Junior in College.Over the Last 12 Months,he