The children in the first group — born to women who had morning sickness — tested with higher intelligence scores than those in the second group. (pregnancymagazine.com)
Lead exposure in childhood has been associated with behavioural disorders and lower intelligence scores. (bcndpcaucus.ca)
Performance on all 4 tests were combined to obtain a global intelligence score, which was regarded as a measure of general cognitive ability (50). (pnas.org)