Correlation study: “Intelligence is just as strongly correlated with beauty as with education”
“The National Child Development Study (NCDS) includes all babies bornduring the week of 03-09 March 1958 in Great Britain (England, Wales, and Scotland), and has followed them for more than half a century throughout their lives. When they were 7 and again when they were 11, their teachers were asked to describe the children physically. For the purpose of the analysis below, the children are defined to be attractive if they were described as attractive at both age 7 and age 11. They were defined to be unattractive otherwise. 62% of the NCDS respondents are coded as attractive. Their intelligence is measured with 11 different cognitive tests at three different ages (7, 11, and 16). NCDS has the best measure of general intelligence available in any large-scale survey data.
As the graph below shows, attractive NCDS respondents are significantly more intelligent than unattractive NCDS respondents. Attractive NCDS respondents have the mean IQ of 104.23, whereas unattractive NCDS respondents have the mean IQ of 91.81. The difference between them is 12.42. This mean difference implies a correlation coefficient of r = .381 […]”