Psychology (from Greek, literally "to talk about the soul", from ψυχή, "psyche", soul, and λόγος, "logos") is both an academic and applied discipline involving the scientific study of mental processes and behavior. Psychologists attempt to unravel the functioning of the brain exposed to real life from the perspective of another human or the self, while neurologists would try to understand it from the small scale neurons. Psychologists study such phenomena as perception, cognition, emotion, personality, behavior, and interpersonal relationships. Psychology also refers to the application of such knowledge to various spheres of human activity, including issues related to daily life—e.g. family, education, and work—and the treatment of mental health problems.
In addition to dissecting the brain's implementation of elementary mental functions, psychology also attempts to understand the role of those functions play in social behavior and in social dynamics, while incorporating the underlying physiological and neurological processes into its conceptions of mental functioning. Psychology includes many sub-fields of study and application concerned with such areas as human development, sports, health, industry, law, and transpersonal psychology.