Berk, R.A. "Comparative Study of the Perception of Divergency in the Imaginative Stories of Homogeneously Grouped Preadolescent Gifted Students and Heterogeneously Grouped Students in the Twin Cities Area." Unpublished research paper, University of Minnesota, Minneapolis, 1965.
2.
Tan, Conchita A. "A Comparative Study of the Perception of Divergency in the Imaginative Stories of Preadolescent Children in the Philippines and in the Twin Cities ." Unpublished research paper, University of Minnesota , Minneapolis, 1964.
3.
Torrance. E.P. and Conchita A. Tan .Revised Scoring Guide for Analyzing Attitudes Concerning Divergency in Imaginaative Stories. Minneapolis : Bureau of Educational Research, University of Minnesota , 1964. (Mimeographed.)
