The scientific study of mind and behaviour is known as psychology. It is derived from the Greek words psyche, meaning "breath, spirit, soul," and logia, meaning "study of."
The modern field of psychology did not always exist. Although, as the great psychologist Hermann Ebbinghaus put it, the field has a brief history but a lengthy tradition, it is still thought of as a youthful discipline. The field of psychology has rapidly expanded to become...