抄録
When subjects study a list of related words, all of which are associates of a critical nonpresented word, they sometimes erroneously recall the critical nonpresented word. In a preliminary experiment with 24 lists of related words, 12 of the lists that had higher rates of false recall of critical nonpresented words (FRC) were identified. In the present experiment, the words in those 12 lists were used; 33 subjects were assigned to a random condition or a blocked condition. In the random condition, one or two associates of each critical nonpresented word were included in one list. In the blocked condition, each list was composed of associates of one critical nonpresented word. In both conditions, 12 lists of 15 words each were presented. If blocked presentation of associates of one critical nonpresented word is not a necessary condition for FRC, random presentation of associates would produce FRC. However, the rate of FRC in the random condition was 3%. This suggests that blocked presentation of related words is necessary for the formation of false recall.