ABSTRACT
Industrial tests of labour efficiency, or more accurately, measurements of inefficiency in the human factor or the use of it, should satisfy three requirements. They should consist of data objectively measurable and actually measured; they should be attributable at least partly to the human factor as discussed in the last chapter; and they should involve costs to the employer, the worker or society which can to some extent be avoided by industry—there should be a preventable gap between actual total costs and the minimum unavoidable.
