THE METHOD IS BASED ON THE PRINCIPLES OF PROGRAMMED LEARNING IN WHICH THE STUDENT IS TESTED AT REGULAR INTERVALS ON WHAT HE HAS LEARNED THUS FAR. THE MATERIAL CONSISTS OF A SERIES OF BIOGRAPHICAL SEGMENTS FROM THE CASE HISTORY OF A CLIENT. AT THE END OF EACH SEGMENT THE STUDENT CHOOSES FROM AMONG THREE SEGMENTS THE ONE WHICH WOULD BEST DESCRIBE THE PROBABLE BEHAVIOR OF THE CLIENT ON THE BASIS OF HIS PERSONALITY CHARACTERISTICS. THE BELGIAN AUTHOR PRESENTS EXAMPLES OF THE METHOD AS IT WAS FIRST DEVELOPED BY ITS AMERICAN ORIGINATOR, CHARLES DAILY. HE ALSO PRESENTS EXAMPLES OF THE METHOD AS MODIFIED BY HIMSELF. THE LATTER INCLUDE SUPPLEMENTARY DATA ON THE RESULTS OF PSYCHOLOGICAL TESTS TAKEN BY THE CLIENTS TO BE USED BY THE STUDENT IN HIS PREDICTIONS OF THE CLIENTS' BEHAVIOR. --IN FRENCH