Emotion-word density of various emotions during pre-COVID-19 (2013–2019) and COVID-19 (2020–2022) periods, with percent change (% Change), and p-values (Mann-Whitney U test).
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Emotion-word density is calculated as the total number of emotion-related words used in a month divided by the total number of words posted in that month.
创建时间：
2025-12-19
