- Subject index
Via 100 entries, 21st Century Psychology: A Reference Handbook highlights the most important topics, issues, questions, and debates any student obtaining a degree in the field of psychology ought to have mastered for effectiveness in the 21st century. This two-volume reference resource, available both in print and online, provides an authoritative source to serve students’ research needs with more detailed information than encyclopedia entries but without the jargon, detail, or density found in a typical journal article or a research handbook chapter. Students will find chapters contained within these volumes useful as aids toward starting research for papers, presentations, or a senior thesis, assisting in deciding on areas for elective coursework or directions for graduate studies, or orienting themselves toward potential career directions in psychology.
Chapter 85: Psychoactive Substance Use Disorders
Psychoactive Substance Use Disorders
Throughout history and across cultures, humans have sought out various psychoactive substances, concoctions, drinks, pills, plants, herbs, and potions to alter, improve, change, and otherwise treat what ails us. The term psychoactive refers to a substance or drug that can alter physiology, cognition, emotion, and behavior. The part of the body most affected by psychoactive substances or drugs is the central nervous system (CNS), which comprises the brain and the spinal cord. Once inside the CNS, the drug can alter biochemical interactions both within and between brain cells or neurons. These interactions, in turn, often have a powerful and rapid impact on thinking, feeling, and behaving. Drug effects are typically classified in terms of how they alter CNS ...