For thousands of years, cultures throughout the world have been able create natural drugs from which of the following classes?

Which of the following best identifies the principal effects of stimulant drugs such as amphetamines and cocaine?

A person that takes the same amount of a drug but experiences a diminished effect over time is experiencing...

Which of the following is considered a hallucinogenic drug?

Which of the following is an accidental or pathological cause of an altered state of consciousness?

Which of the following significantly affects both serotonin and dopamine concentrations?

A research participant is asked seven questions during an interview. Three weeks later, he is asked six different questions and one question that he was asked before. He answers the familiar question more quickly than the new questions. This is an example of __________.

Alcohol belongs to which of the following drug categories?

Which of the following terms is best defined as the form of waves that are emitted by a person who is awake, unfocused, and relaxed?

Psychoactive drugs are chemicals that alter perception and mood. Which of the following describes how an individual would become tolerant to such medications?