Bigger brains are smarter, but not by much

(University of Pennsylvania) Using a large dataset and controlling for a variety of factors, including sex, age, height, socioeconomic status, and genetic ancestry, Gideon Nave of the Wharton School and Philipp Koellinger of Vrije Universiteit Amsterdam found that people with larger brains rated higher on measures of intelligence and educational attainment. Size was far from everything, however, explaining only about two percent of the variation in smarts.
Source: EurekAlert! - Medicine and Health - Category: International Medicine & Public Health Source Type: news