The Beitriige zur Psychologie der Aussage is a German periodical magazine, edited by William Stern and a few other psychologists, among whom is the foremost psychologist of the Netherlands, Professor Heymans, of Groningen. The German word aussage means "to state, declare, report," and the Psychologie der Aussage is concerned with questions like these: Suppose a man on the witness-stand makes, even under oath, certain statements, how much of what he swears to be facts are we to believe? Or, suppose a newspaper man writes a report of an accident or event, how much of what he writes may we accept as true, granted that he has done his utmost to be as exact as possible ? To solve these questions several experiments have been made by various investigators: Stern experimented with 35 children of an elementary public school; Rosa Oppenheim, exclusively with 30 girls; Max Lobsien, with 4 classes of girls and 5 classes of boys; Rodewaldt, with 50 hospital soldiers. Stem took from the lowest, the middle, and the upper grades two backward, two mediocre, and two bright pupils and led them, one at a time, into an empty schoolroom, where for one minute each had to look at the picture of a room in a farmer's house. Then the picture was taken away and the child had to report what it had seen. Afterward, 73 questions, previously written out, had to be answered: 4 referred to persons; 26, to things; 5, to activities of persons; 9, to localities; 18, to colors; I I, to qualities and numbers. Besides there were 12 suggestive questions, i.e., questions as to things that do not exist. Nine and a half weeks later the children were asked the same questions, without the picture being shown them.