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This study investigated if user-generated comments on Internet news sites affect readers' inferences about public opinion, and subsequently, their perceptions of media bias, and how ego-involvement moderates such effects. Supporting the notion that hostile media perception (HMP) stems from defensive processing, those who read others' comments discordant (vs. concordant) with their own opinion believed that the public was against their position and perceived the news report to be more hostile and partial in its coverage, but such effects were limited to those with higher ego-involvement. Readers' comments also had a direct effect on HMP among more involved individuals, without altering their perceptions of public opinion, suggesting that people might misattribute the opinions expressed in others' comments to the news article.
Eun‐Ju Lee (2012) studied this question.