Aptitude is your inherent capacity, ability or talent to do something. Aptitude may be mental or Physical. An aptitude is an innate component of a competency to do a certain kind of work at a certain level. The innate nature of aptitude is in contrast to achievement, which represents knowledge or ability that is gained.
Aptitude and intelligence quotient (IQ) are related, and in some ways opposite views of human mental ability. Whereas intelligence quotient sees intelligence as being a single measurable characteristic affecting all mental ability, aptitude refers to one of many different characteristics which can be independent of each other, such as aptitude for military flight, air traffic control, or computer programming. This is more similar to the theory of multiple intelligences.
Aptitude tests conducted in our quiz programs are structured systematic ways of evaluating how people perform on tasks or react to different situations. They have standardized methods of administration and scoring with the results quantified and compared with how others have done at the same tests. They are increasingly administered on a computer.