Look, Dude: How hyperpartisan and non-hyperpartisan speech differ in online commentary

Identifying the characteristics of hyperpartisan communication that make it so amenable to sharing is crucial to combating the spread of misinformation. We analyzed a corpus of hyperpartisan and non-hyperpartisan writing produced on internet forums and found that markers of spontaneous communication are strongly predictive of hyperpartisan speech, regardless of whether that speech is left- or right-leaning. The markers of spontaneous communication included swear words, discourse markers, local pronouns like I and you, and exclamation marks. This suggests that speakers in hyperpartisan online communities exploit linguistic resources, even those without overtly political or persuasive content, to engage readers through appeal to closeness and familiarity.