It is clear at once that this method yields little information of the kind we are here considering, beyond the cataloging of the general sterling virtues of mankind. The peculiar and distinctive mental functions presumably involved in the various types of work are just the ones that no one not an expert in psychological analysis could be expected adequately to portray. The so-called special qualifications, such as honesty, patience, attention, neatness, perseverance, etc., do not represent elementary psychological categories. Moreover, they are qualifications with which no legitimate sphere of human activity can afford to dispense. In the long run they are characteristics which correlate to a high degree or, indeed, perhaps help to make up and constitute what we call general intelligence. In no case is there any specification of the precise amount of these various traits that may be needed. Since the days of the faculty psychology we have ceased to think of attention, memory, will, etc., as homogeneous powers which play in a general sort of way on all sorts of material. We usually find that when an individual is inattentive to one set of facts this is largely due to his being attentively preoccupied with some other set. Still further, no tests have been proposed which satisfactorily measure such traits as honesty, perseverance, promptness. Nor is it certainly known to what degree such traits are fixed characteristics of individuals and to what degree they represent present habits and tendencies modifiable in many ways if the circumstances call for such change.