A Statistical Study of American Men of Science By J Mckeen Cattell
A Statistical Study of American Men of Science By J Mckeen Cattell
James Mckeen Cattell
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Thus, for example, it is not easy to compare a man who has made one or two important discoveries with a man who has accomplished a large mass of useful work. The tendency of the probable errors to in- crease is, however, significant. It is easier to assign the order at the top of the list, and the difficulty increases as we go downward. This subjective fact is measured by the probable errors. It is in part due to less knowledge of those whose work is less important. I know of no way to eliminat...e this factor or to measure its influence. But the main factor is the real differences between the men, and these are assumed to be inversely as the prob- able errors and directly as the differences in grade. In Table III. Are given all the probable errors averaged in six groups for each of the sciences. In the first and second groups are included one tenth of those in each science, and in the remaining groups one fifth. That is, the probable errors are divided into five equal groups, but the first group is divided into two subgroups, in view of the fact that 550 AMERICAN MEN OF SCIENCE HI.
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