Education as an objective science was strongly promoted around 1900 by Alfred Binet and Edward Thorndike. Binet it was who invented the first intelligence tests, and they were extended and promoted in English by Louis Terman. Binet's ideas were sympathetic to Thorndike, who was above all interested in turning psychology into a real science by research, measurement and empirical evidence. The arrival of World War I caused a huge conscription of men into the fighting services. Sorting out men of all types was an urgent problem. The intelligence tests proved to be very useful at helping get the right men into the right jobs. Not surprisingly, the use of IQ tests continued in education, where a similar problem of sorting out occurs in unselected public school enrollments.