Abstract
Japan's population aging rate is 29.1%, a high percentage. Previous research approaches to the elderly have mainly focused on topics related to the medical and welfare fields of the elderly. Prior research has shown that the elderly are known to prefer positive information and that focusing on positive information can stabilize their mood. In this study, therefore, we analyze the data on complaints posted by the elderly, targeting complaints, a comment that tends to be negative, and clarify the characteristics of information transmission by the elderly.