Psychology is a multifaceted discipline which includes many sub-fields of study such as human development, sports, health, clinical, social behaviour and cognitive processes. Principally, psychology is the scientific study of the mind and behaviour (not to be confused with neuroscience, which studies the neural underpinnings of psychological phenomena).

Psychology includes the study of conscious and unconscious phenomena, as well as feeling and thought, and is really a very new science, with most advances happening over the past 150 years or so. However, its origins can be traced back to ancient Greek philosophy, 400 – 500 years BC, with great thinkers such as Socrates influencing Plato, who in turn influenced Aristotle.