In contrast, psychology emerged as a separate scientific discipline in the late 19th century, building upon the philosophical inquiries of earlier scholars. In the 19th century, figures like Wilhelm Wundt and William James are often credited with establishing psychology as a separate discipline. Wundt, for instance, founded the first psychological laboratory in 1879 in Leipzig, Germany, where he conducted experiments to study the elements of human consciousness. James, in the United States, wrote the influential book "The Principles of Psychology" in 1890, which helped establish psychology as a formal academic discipline.
Rooted in empirical observation and experimentation, psychology employs rigorous scientific methods to study human thought, emotion, and behavior. Psychologists use experiments, surveys, and observations to gather data, aiming to understand the underlying mechanisms that govern human actions. While philosophy contemplates abstract questions, psychology employs empirical evidence and data-driven approaches to explore topics such as perception, memory, and social behavior. Despite their shared historical roots, philosophy and psychology represent distinct methodologies—one characterized by theoretical inquiry and abstract reasoning, the other by empirical investigation and scientific observation.