In part four of Motivational Work the theory is deepened. It allows the author to describe the functions of the contact rebus in greater detail. The theory can be likened to a very large-scale map: it depicts the same reality as a map with a smaller representative fraction, but shows features that would otherwise be too small to see. This wealth of detail can help the motivational worker develop an even greater understanding of the mechanics of the counsellor-client encounter and give him invaluable guidance in his work.