Haier and Jung have made some of the seminal findings in intelligence studies. In a 2004 study, they found that regions related to general intelligence are located throughout the brain and that a single intelligence center, such as the frontal lobe, is unlikely. And in a 2005 study, they found that while there are essentially no disparities in general intelligence between the sexes, women have more white matter and men more gray matter related to intelligence test scores, suggesting that no single neuroanatomical structure determines general intelligence and that different types of brain designs can produce equivalent intellectual performance.
Genetic research has demonstrated that intelligence levels can be inherited, and since genes work through biology, there must be a biological basis for intelligence, Haier said. We have a long way to go before we understand the details, but our P-FIT model provides a framework for testing new hypotheses in future experiments.
|Contact: Tom Vasich|
University of California - Irvine