Psychology is a remarkably varied field, involving both the performance of scientific research and the application of its findings. Psychologists work as scientists, clinicians, teachers, authors, consultants, and evaluators. They perform empirical research, provide therapy and assessment, and evaluate mental status or disability in numerous settings, such as the government, schools and the judicial system. Psychologists also consult on wide-ranging problems for businesses, schools, the military, the police force, sports teams and even rock bands. As the study of human behavior, psychology is can potentially apply to any field of human endeavor.