Three hundred and seventy-five children in Grades 2, 3, 4, and 6 were asked to generate instances of 25 different categories within a time period of 1 min per category. Data were tallied so that category instances are ranked as to proportion of subjects making each response at each grade level. Indications of the average number of category instances generated by children at each grade level within each category are provided.
The experimenter said: "We are going to play a word game. This is not a test. Weare going to think of different kinds of things. That is, I am going to tell you a thing and you tell me all different kinds of it that you can think of."