https://www.sciencedaily.com/releases/2018/07/180724174314.htm

After analyzing hundreds of exchanges between Wikipedia editors, the researchers developed a computer program that scans for warning signs in the language used by participants at the start of a conversation -- such as repeated, direct questioning or use of the word "you" -- to predict which initially civil conversations would go awry.

Early exchanges that included greetings, expressions of gratitude, hedges such as "it seems," and the words "I" and "we" were more likely to remain civil, the study found.