CLERKS S 7 . Although, as has been pointed out, there were certain ^adequacies in the tests applied as well as in the judg ments obtained from the office heads, the value of the r esults became more and mere clear with each passing month. The inspection or follow up conducted at the end °f each month showed a consistent increase in the per centage of agreement between the estimates based upon ne tests and those given by the office chiefs. For example, ° n e hundred and eighty-eight clerks recommended on the asis of the tests and followed up at intervals of one month for a period of three months were estimated as follows: Percentage of those called good by their superiors At the end of one month 75% “ “ “ “ two months 89% “ “ “ “ three months 9 2 % n brief, the verdict of the tests was corroborated with mcreasing certainty as the various office heads learned know their workers better. Looking at the matter °m another angle, the verdicts rendered on the basis te sts occupying only a few minutes’ time were more liable than those rendered by the office heads after they a d known the workers thus selected for one, two, and e ^en three months. If tests have any value it is in this juty to effect in a few minutes a selection which time . m justify; and the measure of that value is the degree n "which succeeding months confirm this selection.