A Virginia Commonwealth University study found that smarter people are better proportioned than those with lower intelligence. The researchers reviewed 14 previous studies that measured and compared body symmetry (balanced proportions between the left and right sides of the body) of fingers, hands, toes and feet. The study of nearly 1900 people appeared to confirm a connection between body symmetry and intelligence. "This provides evidence for one potential cause of differences in individual intelligence," says study co-author George Banks.