when one changes their environment to better suit one's needs. A teacher may invoke the new rule of raising hands to speak to ensure that the lesson is taught with least possible disruption. The process of selection is undertaken when a completely new alternate environment is found to replace the previous, unsatisfying environment to meet the individual's goals. For instance, immigrants leave their lives in their homeland countries where they endure economical and social hardships and go to other countries in search of a better and less strained life. The effectiveness with which an individual fits to his or her environment and contends with daily situations reflects degree of intelligence. Sternberg's third type of giftedness, called practical giftedness, involves the ability to apply synthetic and analytic skills to everyday situations. Practically gifted people are superb in their ability to succeed in any setting. An example of this type of giftedness is "Celia". Celia did not have outstanding analytical or synthetic abilities, but she "was highly successful in figuring out what she needed to do in order to succeed in an academic environment. She knew what kind of research was valued, how to get articles into journals, how to impress people at job interviews, and the like". Celia's contextual intelligence allowed her to use these skills to her best advantage. Sternberg also acknowledges that an individual is not restricted to having excellence in only one of these three intelligences. Many people may possess an integration of all three and have high levels of all three intelligences. Practical intelligence is also a topic covered by Malcolm Gladwell in his book Outliers: The Story of Success. Criticism Psychologist Linda Gottfredson criticises the unempirical nature of triarchic theory. Further, she argues it is absurd to assert that traditional intelligence tests are not measuring practical intelligence, given that they show a moderate correlation with income, especially at middle age when individuals have had a chance to reach their maximum career potential, and an even higher correlation with occupational prestige, and that IQ tests predict the ability to stay out of jail and stay alive (all of which qualifies as practical intelligence or "street smarts"). Gottfredson claims that what Sternberg calls practical intelligence is not a broad aspect of cognition at all but simply a specific set of skills people learn to cope with a specific environment (task specific knowledge). There is evidence to suggest that