National Certified Addiction Counselor, Level 2 (NCAC II) Practice Exam Exam

What is a psychoactive substance?

1. A substance that has no effect on the mind

2. A compound that alters mental processes

3. A chemical solely used for industrial purposes

4. A natural remedy without side effects

The correct answer is: A compound that alters mental processes

A psychoactive substance is defined as a compound that alters mental processes, affecting mood, perception, cognition, and behavior. These substances modify the way the brain functions by interacting with neurotransmitter systems, which can lead to changes in thinking, feeling, and behavior. This definition encompasses a wide range of substances, including legal ones like caffeine and alcohol, as well as illicit drugs. The other options do not accurately describe what a psychoactive substance is. A substance that has no effect on the mind would not qualify as psychoactive, as such substances do not alter mental processes at all. A chemical used solely for industrial purposes generally lacks psychoactive properties, as its primary function is not related to influencing mental states. Lastly, while natural remedies can be beneficial, labeling them as devoid of side effects does not accurately represent the potential for any substance, psychoactive or not, to cause various effects, including unwanted ones. Therefore, the best description of a psychoactive substance is one that emphasizes its role in altering mental processes, confirming that the chosen answer accurately reflects this concept.