Isopäiset älykkäitä

Are the size and weight of your brain indicators of your mental capacity?:

A straightforward method for evaluating the relationship between brain size and IQ scores is the correllation coefficient. For the 20 men in the study, the researchers report correlations between IQ scores and brain sizes before and after controlling for body size of r = 0.51 (p-value less than 0.05) and r = 0.65 (p-value less than 0.01) respectively. For the 20 women in the study, the researchers report the corresponding correlations to be r = 0.33 (p-value not significant) and r = 0.35 (p-value not significant). With both genders pooled the correlation between IQ and adjusted brain size was r = 0.51 (p-value less than 0.05).

Higher Intelligence Caused By Slower Brain Development.