Human behavior (behavioral psychology) is the observable actions, reactions, and responses of individuals within the species *Homo sapiens*, as systematically studied and analyzed through the theoretical frameworks and empirical methods of behavioral psychology. This field primarily investigates the relationship between environmental stimuli and behavioral outcomes, emphasizing learned responses, conditioning processes (both classical and operant), and the influence of consequences on future actions. It provides a framework for understanding how behavior is acquired, maintained, and modified, serving as a basis for research and intervention in various applied settings.