THE MEASURE OF COMPARATIVE PRODUCTIVENESS 305 reasons for laying off a worker, has been this difficulty. Neither the foreman nor the worker considers this a just or an accurate procedure, for the very reason that the judgment expressed is too dependent on the personal equation and other unreliable variables. On the other hand, the record of a man’s actual work, his comparative productiveness, is an impersonal criterion which is fair from both points of view, that of employee and employer, and does not excite the animosity so likely to be aroused by a personal opinion. A third reason for judging moral qualities in terms of production rather than in terms of the descriptive ad jectives usually applied is the fact that the former is usually much the more sensitive indicator. For instance, if a worker has been out late the night before or has taken part in some strenuous celebration, it may not be apparent to the foreman on the following morning, but the effects will hardly escape the impartial record of the man’s pro duction for that day or ensuing days. Continuous irregu larities in the worker’s manner of living may be kept from the foreman for a long time, but they are bound to affect the worker’s ability to turn out work. The same principle applies to most moral traits. Impatience, lack of concen tration, carelessness, dissipation, laziness, dishonesty—all of these traits will express themselves in the amount of work done by the individual with mathematical certainty. Therefore, for the sake of this increased certainty and decreased ambiguity, the description of a worker’s moral qualities should be limited to his production record. There are instances, to be sure, in which the moral qualities must be considered in themselves. Honesty, for example, is not always or entirely expressed in a man’s productiveness. Therefore it is difficult to compare men