Mr. Frank Ruberto (Revere, MA), Prof. Matilde Vicentini-Missoni ( Rome), Prof. Clotilde Pontecorvo ( Rome), Prof. Aldo Visalberghi ( Rome), Präsident Hermann Schnell ( Vienna), Frau Landesschulinspektor Dr. Erna Janisch ( Vienna), Herr Bezirksschulinspektor Alfred Prosl ( Vienna), Dr. Reuben Pierce ( Washington, D.C.), and Mrs. Maxine Broderick (Westwood, MA). We should also like to thank Dr. Marilyn Appel, Mr. Thomas Baker, Prof. Robert Fuller, Miss Barbara Karplus, Mr. Paul Andrew Karplus, Mrs. Marilyn Krupsaw, and Mrs. Kerstin Waern for helping us adminster the tasks. Discussions with Dr. Warren Wollman contributed to our formulation of the tasks and Mr. Joseph Walker furnished some of the equipment. Drs. Björn Andersson, H. Bleichroth, Anton Lawson, and Warren Wollman made enlightening comments on our manuscript. In addition to ackknowledging the professional assistance to our project, we express our deep appreciation for the hospitality, friendliness, and interest with which we were received everywhere.
We are grateful for the hospitality of the Division for Study and Research in Education at the Massachusetts Institute of Technology, where we began this investigation. A fellowship from the John Simon Guggenheim Foundation helped defray the costs of the research.
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