“…If the statements are to be considered a Guttman scale, then certain conditions must be met with respect to the pattern of check marks recorded in the table, the most important of which is that "from a person's rank ^ Suchman (1950) provides a good description of the scalogram board, a device used by members ofthe Research Branch, Information and Education Division, Army Service Forces, in doing scalogram analyses. Kahn andBodine (1951), andFord (1950) describe procedures involving IBM equipment.…”