ABSTRACT

The last chapter was concerned with the selection and training of individual workers. But an employer is often faced with a more fundamental question: shall he change the entire type of worker from which to select individuals? The problem was familiar in both world wars when military call-up of men required dilution and the substitution of women for men in the factories. A similar problem arises when the raising of the school-leaving age and lower birth rates cut down the supply of young people, and when these lower birth rates together with lower death rates leave a higher proportion of old persons in the population.