Another possible limitation of the study was the use of air temperature and moisture as a measure of thermal discomfort. Even though moisture was a question in the environmental survey, it was not a variable in the normal/extreme room settings. A recent study suggests that thermal discomfort is a combination of the interaction between the individual and the environment. For example, Lan, Wargocki, and Lian (2011) postulate that thermal discomfort is comprised of individual factors such as layers of clothing, physical movement and metabolic heat production com- bined with environmental factors such as air temperature, moisture in the air, and air movement (speed).