Triarchic theory of intelligence
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The triarchic theory of intelligence was formulated by Robert J. Sternberg, a prominent figure in the research of human intelligence. The theory by itself was groundbreaking in that it was among the first to go against the psychometric approach to intelligence and take a more cognitive approach.
Sternberg’s definition of human intelligence is “(a) mental activity directed toward purposive adaptation to, selection and shaping of, real-world environments relevant to one’s life” (Sternberg, 1985, p. 45), which means that intelligence is how well an individual deals with environmental changes throughout their lifespan. Sternberg’s theory comprises three parts: componential, experiential, and practical.
Contents
* 1 Different components of information processing * 1.1 Componential / Analytical Subtheory * 1.2 Experiential / Creative Subtheory * 1.3 Practical / Contextual Subtheory * 2 Challenges * 3 See also * 4 References * 5 Bibliography
Different components of information processing

Schematic illustrating one trial of each stimulus pool in the Sternberg task: letter, word, object, spatial, grating.
Sternberg associated the workings of the mind with a series of components. These components he labeled the metacomponents, performance components, and knowledge-acquisition components (Sternberg, 1985).
The metacomponents are executive processes used in problem solving and decision making that involve the majority of managing our mind. They tell the mind how to act. Metacomponents are also sometimes referred to as a homunculus. A homunculus is a fictitious or metaphorical "person" inside our head that controls our actions,