The most probable area of study that would show the prevalence of mental illness in mid-Manhattan is that of

• A. Epidemiology
• B. Psychology
• C. Sociology
• D. Anthropology

Answer: (A)

Measuring how common a condition is in a defined population is the domain of epidemiology. This field looks at how diseases and health states are distributed across groups, places, and times, and at the factors that influence that distribution. Prevalence specifically refers to the proportion of people in a population who have the condition at a given moment, which is exactly what you’d want to know to describe mental illness in mid-Manhattan. Other disciplines examine different aspects: psychology focuses on individual mental processes and behavior; sociology studies social structures and relationships that can affect health but doesn’t by itself quantify how many people are affected; anthropology explores culture and human variation, including illness concepts, rather than measuring population-wide prevalence. So epidemiology is the best fit for assessing how widespread mental illness is in a specific geographical area.