Triarchic theory of intelligence
The triarchic theory of intelligence or three forms of intelligence, formulated by psychologist Robert Sternberg, aims to go against the psychometric approach to intelligence and take a more cognitive approach, which leaves it to the category of the cognitive-contextual theories. The three meta components are also called triarchic components.
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". Thus, Sternberg viewed intelligence as how well an individual deals with environmental changes throughout their lifespan. Sternberg's theory comprises three parts: componential, experiential and practical.
Sternberg's theory has since been expanded and advanced in the book Experiential Intelligence by Soren Kaplan.