Intelligence
Intelligence may be narrowly defined as the capacity to acquire knowledge and understanding, and use it in different novel situations. It is this ability, or capacity, which enables the individual to deal with real situations and profit intellectually from sensory experience. A test of intelligence is designed to formally study, under test conditions, the success of an individual in adapting to a specific situation. There are a number of different methods which purport to measure intelligence, the most famous of which is the IQ, or intelligence quotient test. In the formation of such tests many psychologists treat intelligence as a general ability operating as a common factor in a wide variety of aptitudes.