[Evaluating programs for preparation to old age: some theoretical thoughts and a practical example (author's transl)].

In the first part methodically satisfactory experimental designs for evaluating programs for preparation to old age on the basis of Cambell & Stanely (1963) are sketched including conditions which hinder the realization of the ideal notions. In the second part an experiment for comparing two preparatory courses to old age using different methods of instruction is described. It was observed that the more demanding teaching method resulted in more anxiety for old age. This led to the conclusion, that programs for preparation to old age should be planned as a sequence of several units in which the mastering of the new ideas may be learned and in which this learning process may be supervised.