“…"In order to depersonalize the study," Bain wrote, "each student was given a number." Similarly, attitudinal studies by Dodd,* Garrison and Mann, 8 Harris, Remmers and Ellison,' Moore and Garrison, 11 Smith, 14 Uhrbrock, 16 and Gray, 8 made use of or recommended anonymous questionnaires. This list is not complete but it serves to illustrate a rather widespread conviction.…”