Empirical studies are research investigations that rely on observation and experimentation to gather data. These studies aim to test hypotheses and draw conclusions based on measurable evidence rather than theory or speculation. Researchers often use methods such as surveys, experiments, and field studies to collect information that can be analyzed statistically. The results of empirical studies contribute to the body of knowledge in various fields, including psychology, sociology, and medicine. By providing concrete evidence, these studies help validate or refute existing theories and inform practices, policies, and further research.