Successfully used for a number of years by more than four hundred psychologists and psychiatrists, this set of pictures designed to reveal the determinants of psychological conflict is now made available in a standard edition. Thirty halftones printed directly on white cards constitute the new set, and they may be arranged in groups of twenty for boys, for girls, for adult males, and for adult females. A manual of instructions for their use accompanies the pictures. The three previous editions, which were distributed by the Harvard Psychological Clinic, have proved unusually effective in the diagnosis of cases of psychosomatic illness as well as in the neuroses and psychoses.