showing that genius clusters in what he termed “Notable Family Lines”, such as those of Bernoulli, Cassini, Darwin, Herschel, and Jussieu in science, or Bach in music. Galton then calculated the odds of eminent people having eminent relations, taking into account the closeness of the biological connection (e.g., son vs grandson), and the magnitude of achievement of the eminent parent. His findings were as anticipated: the more famous the parent (i.e., the greater level of presumed “natural ability”), the greater likelihood there would be illustrious relatives; and the closer the blood tie, the greater those odds. Early Mental Traits of 300 Geniuses – Cox (1926) Catharine Cox’s book on The Early Mental Traits of Three Hundred Geniuses (1926), was similar to Galton's in its orientation. Using the method that her mentor, Stanford Psychology Professor Lewis Terman, had developed for differentiating children in terms of intelligence, Cox coded records of childhood and adolescent achievements of 301 historic eminent leaders and creators to estimate what their IQs would have been on the basis of intellectual level of such achievements relative to the age at which they were accomplished. For example, John Stuart Mill reportedly studied Greek at 3, read Plato at 7, and learned calculus at 11. As such, what he was doing at 5, the average person couldn't do until 9 years, 6 months of age, giving Mill an estimated IQ of 190. Cox found that the perceived eminence of those with the highest IQs was higher than that of those attaining lower IQ estimates, and that those with higher IQs also exhibited more versatility in their achievements. For example, da Vinci, Michelangelo, Descartes, Benjamin Franklin, Goethe, and others with IQs in the mid 160s or above were superior in their versatility to those attaining lower scores, such as George Washington, Palestrina, or Philip Sheridan. Both Cox and Galton have been criticized for failing to take account of the role of nurture, or more specifically socio-economic and educational advantage, in the achievements of these historical greats. Cultural approach There was one major anthropological study of genius, and it was triggered specifically by the author's contentions with Galton's work. Configurations of Cultural Growth – Kroeber (1944) Alfred Kroeber’s Configurations of Cultural Growth (1944) looked at many of the same historic greats as did Galton and Cox, but from a completely different orientation. As a cultural anthropologist, Kroeber maintained that, in Simonton's words,