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      Affective News: The Automated Coding of Sentiment in Political Texts

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      Political Communication
      Informa UK Limited

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            Negative information weighs more heavily on the brain: the negativity bias in evaluative categorizations.

            Negative information tends to influence evaluations more strongly than comparably extreme positive information. To test whether this negativity bias operates at the evaluative categorization stage, the authors recorded event-related brain potentials (ERPs), which are more sensitive to the evaluative categorization than the response output stage, as participants viewed positive, negative, and neutral pictures. Results revealed larger amplitude late positive brain potentials during the evaluative categorization of (a) positive and negative stimuli as compared with neutral stimuli and (b) negative as compared with positive stimuli, even though both were equally probable, evaluatively extreme, and arousing. These results provide support for the hypothesis that the negativity bias in affective processing occurs as early as the initial categorization into valence classes.
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              Recognizing contextual polarity in phrase-level sentiment analysis

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                Author and article information

                Journal
                Political Communication
                Political Communication
                Informa UK Limited
                1058-4609
                1091-7675
                April 2012
                April 2012
                : 29
                : 2
                : 205-231
                Article
                10.1080/10584609.2012.671234
                d7a3fd07-4df0-4f6b-a987-6bec0a43c430
                © 2012
                History

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