The More Sophisticated, the More Biased? Testing a New Measure of Political Sophistication on Biased Information Processing

Valli, Chiara; Eugster, Beatrice; Arlt, Dorothee (2023). The More Sophisticated, the More Biased? Testing a New Measure of Political Sophistication on Biased Information Processing. International journal of public opinion research, 35(4) Oxford University Press 10.1093/ijpor/edad037

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According to literature, biased information processing increases with political sophistication. The logic behind this relationship is that political sophisticates possess greater cognitive skills and knowledge to defend their prior beliefs. Although political sophistication can be understood as a multidimensional concept, existing research primarily uses general political knowledge as a proxy to assess it. Therefore, we introduce a more rigorous measure of sophistication that gauges individuals’ ability to justify their attitudes with substantive and well-elaborated arguments and put the classic measure of political sophistication to a test. We study these mechanisms in a direct-democratic setting via an online survey, in which 898 Swiss-German voters are exposed to a tailored counterargument on a political referendum. Our results indicate that individuals with higher levels of sophistication evaluate counter-attitudinal information less favorably and hold more stable opinions. While we did not find support for the hypothesis that sophistication leads to selective exposure to consonant information, our analysis points to a reverse mechanism: individ- uals with lower levels of sophistication exhibit a higher likelihood of exposure to dissonant views. Notably, these results align with the trends reported for general political knowledge and corroborate the validity of using general political knowledge as a proxy for political sophistication.

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