Philip E. Vernon

Vernon studied and lectured in at least twenty-eight countries; and held a number of posts throughout his career.

the analysis of the World War I American military conscripts showed that the average IQ of children born in the professional class was 123, whereas those born to unskilled workers averaged 96. Vernon concluded that these social class differences have some genetic basis. He based this assessment on his review of the evidence that the intelligence of adopted children related more to the social class of their biological parents than to that of their adopting parents. Vernon suggested that social mobility allows those with higher intelligence to rise in the social hierarchy, while those with lower intelligence tend to fall.

In 1968, at the age of 63, he abandoned a secure academic career in England to start a second career at the University of Calgary. The Philip E. Vernon Award at University of Calgary is named in his honour.