Which term best describes the study of how drugs affect brain chemistry and behavior?

• A. Genetic theory
• B. Biopsychological/Biological theories
• C. Sociocultural theory
• D. Psychoanalysis

Answer: (B)

This question focuses on how drugs alter brain chemistry and behavior, which is explained by biopsychological/biological theories. These approaches study the biological underpinnings of behavior, looking at neurotransmitters, neural circuits, and how substances change those processes to produce changes in mood, perception, or action. That’s why this term is the best fit: it centers on the brain’s chemical signaling and how drugs modulate it to affect behavior.

Other perspectives emphasize different factors: genetic theory highlights heredity and gene expression; sociocultural theory considers social and cultural influences; psychoanalysis focuses on unconscious conflicts and early experiences. While those views are important for understanding behavior, they don’t specifically target the brain-chemical mechanisms by which drugs exert their effects.