Study Significance
The study tests a popular idea — the mismatch hypothesis — that features of online environments (impersonal interaction, altered cues, and selection) cause political discussions to become more hostile than offline conversations, and it evaluates whether that hypothesis explains observed online hostility across countries and experimental settings.
Data and Measurement
The authors combined eight studies using cross-national surveys and controlled behavioral experiments, with a total sample of 8,434 respondents, to measure hostility in political discussion and related traits (for example, indicators of status-seeking); the program contrasted self-reports and observed behavior in online versus offline contexts.
Comparisons Made
Across studies the authors compared behavior and reported hostility in online versus offline discussions, tested for adverse selection (whether certain kinds of people are overrepresented online), and examined whether status-driven individuals drive hostility in both settings.
Main Findings
The studies found limited support for the mismatch hypothesis: there was only modest evidence of adverse selection, and no broad pattern that online contexts uniquely change people’s behavior toward greater hostility.
Instead, the evidence points toward status-driven individuals who are drawn to political discussion and display hostility both online and offline; initial evidence also suggests online discussion feels harsher because the behavior of these individuals is more visible online than it is offline.
Implications for Explaining Online Hostility
The findings caution against attributing online political hostility primarily to impersonal technical features; instead, they suggest interventions that address the concentration and visibility of status-driven, hostile actors may be more relevant.
