A genius (plural genii or geniuses,[1] adjective ingenious) is a person, a body of work, or a singular achievement of surpassing excellence. More than just originality, creativity, or intelligence, genius is associated with achievement of insight which has transformational power. A work of genius fundamentally alters the expectations of its audience. Genius may be generalized, or be particular to a discrete field such as sports, statesmanship, science, or art.
Although difficult to quantify, genius is to a level of aptitude, capability, or achievement which exceeds even that of most other exceptional contemporaries in the same field. The normal distribution suggests that the term might be applied to phenomena ranked in the top 0.1%, i.e. three standard deviations or greater, among peers. In psychology, the inventor of the first IQ tests, Alfred Binet, applied the term to the top 0.1% of those tested.[2][3] This usage of the term is closely related to the general concept of intelligence.
The term may be also applied to someone who is considered gifted in many subjects[4][Need quotation on talk to verify] or in one subject.