The term for people who study human behavior is "psychologist." Psychologists explore various aspects of behavior and mental processes, employing scientific methods to understand cognition, emotions, social interactions, and development. They may specialize in different areas, such as clinical psychology, which focuses on diagnosing and treating mental health issues, or developmental psychology, which examines how people grow and change throughout their lives. Psychologists may work in diverse settings, including schools, hospitals, or private practice, conducting research, therapy, and assessments. Their work plays a crucial role in advancing our understanding of human behavior and improving mental health outcomes.