Abstract:

Lack of information and an absence of objectively critical opinions from sociologists and marketing men have led to the present situation whereby personal contact is canonised and used as a criterion of the validity of postal contact. Referring to numerous studies with the personal or the postal form of contact, as well as to special experiments with both forms, I can with, great objective assurance declare that the postal contact as administered eliminates about 50% of all the errors of the personal form of contact and reduces the costs by 50%.