Matarazzo ( 1972, pp. 166 and 177-180) provided scores for enlisted men from various occupations who took the Army General Classification Test (AGCT) during World War II; and IQ scores for medical students, Ph.D. candidates, and university scientists who took the Wechsler Adult Intelligence Scale (WAIS). The occupational categories of Matarazzo and the census were similar but not identical. For elite professions, I matched accountant, college professor, engineer, chemist, lawyer, and physician (IQ data) with accountant, architect, college professor, engineer, natural scientist, lawyer and judge, clergyman, and physician (census). For the less exclusive occupations, I matched artist, teacher, and pharmacist (IQ data) with artist and writer, teacher, nurse, and technician (census).
Using Matarazzo's data as presented, the elite professions would have a mean IQ of 122, all professions plus technicians 115. However, his data must be adjusted. For the AGCT, he gave the conventional values of mean = 100 and SD = 20. The Staff, Personnel Research Section, Adjutant General's Office ( 1945, pp. 761-764) originally normed the AGCT on a substandard sample and almost immediately began to get groups with inflated means and SDs as high as 23. The norms were adjusted to give reasonable results for draftees, but draftees omitted elite groups such as