PSYC 100 Chapter Notes - Chapter 22: Psychoactive Drug, Catatonia, Major Depressive Disorder

• School: Queen's University
• Department: Psychology
• Course: PSYC 100
• Professor: Jill L Atkinson

Document Summary

Psychoactive substance: a chemical that acts on the cns that changes the person"s emotions, perceptions, and thoughts. Describe the four sets of criteria for a substance use disorder. When they effect brain function and cause intoxication and withdrawal, and its difficult to control how much you consume, you develop a tolerance to it, and it affects your life, you have the criteria for a substance use disorder. Intoxication: when a person suffers clinically significant negative or harmful behavioural changes or psychological changes or effects because of the influence of psychoactive substance. Withdrawal: when a person suffers clinically significant negative or harmful behavioural changes or psychological changes or effects because they recently stopped prolonged use of a psychoactive substance. Substance induced disorders: intoxication, withdrawal, and conditions resembling independent mental disorders, such as depression or schizophrenia, that are due to severe intoxication).