What is the original number of questions in the MAST?

The original number of questions in the MAST, or the Marijuana Assessment for Dependence Scale, is 25 questions. This number was established to ensure a comprehensive assessment of different criteria used to evaluate marijuana use and potential dependency effectively. The assessment was designed to cover various aspects of an individual’s usage patterns, mental health, and social implications, which required a breadth of questions to gather significant and useful data. Given that 25 questions provide a balanced approach to detail and clarity, it stands as the correct answer in this scenario.