This study covers almost all of the foreign literatures in relation to thermal sensation voting and gives histrical perspective of those; 1. Voting methods can be classified into rating scale methods and trichotomous methods, and rating scales can be classified into ASHRAE scales and Bedford scales. 2. (1)ASHRAE scale has been changed occasionaly. Glickman replaced 'comfortably' with 'slightly'. Gagge replaced 'comfortable' with 'neutral', while Bedford scale keeps its archetype. (2)McIntyre applied the trichotomous method which originally used by Houghten. (3)Fanger revived the two-step-questioning method of Houghten. 3. (1)Questionnaires in the field studies were distinguished from those in chamber studies until 1950s. (2)Diagrammatic scaling methods have been used since 1970s and rise in number. 4. Category numbers of the rating scales were five at the beginning. Glickman allowed the voting at intermediate of the categories. 5. Some used dials, switches, charts, pointers, and recently on-line votings as voting apparatuses.
