The study of human behavior from a biological perspective is called psychobiology or biopsychology. This field examines how biological processes, such as genetics, neurobiology, and hormonal changes, influence behaviors, emotions, and mental processes. By integrating principles from psychology and biology, psychobiology provides insights into how biological mechanisms affect emotional and cognitive states, and it can help in understanding various mental health disorders. This interdisciplinary approach can lead to advances in treatment and therapies for psychological issues.