Subjective report on dryness under low-humidity environment

Abstract

Focusing on previous studies on the effects of low humidity that obtained subjective reports of humans, the findings to date are summarized in this paper. Humans are affected by low humidity and show psychological responses to low humidity, but in most cases, these responses are weak, and even if humidity is very low, many subjects answer “slightly dry” or “not dry.” In other words, it is difficult to see differences in subjective reports between different humidity conditions. Therefore, the degree of involvement of humidity in human health is not yet clear, and the humidity level that should be maintained has not yet been determined from the subjective report data. The response on the “dry” side at low humidity is often weak, but there are a few clear “dryness” being declared. Therefore, by evaluating individual data rather than the average of multiple subjects, by asking about the sensation of each part of the body, and by selecting evaluation words that are closer to the physical sensation, the effects of low humidity may be clarified.