Recent research provides evidence that when faced with news of a conviction, voters spend more mental energy defending politicians from their own party and finding fault with their opponents. This finding suggests that party loyalty directly influences whether people view legal processes as legitimate or as politically motivated weapons. This research American behavioral scientist.
The 2024 US presidential election presents an unusual situation in US political history. Both major political factions were facing significant legal disputes involving prominent figures. Former President Donald Trump was convicted of falsifying business records in connection with hush-money payments. Around the same time, Hunter Biden, the son of incumbent President Joe Biden, was convicted of illegally purchasing firearms.
Despite the serious nature of these legal issues, public reaction was divided sharply along political lines. Media outlets noted that many partisans dismissed accusations against candidates they supported or candidates’ families as politically motivated. The research team, made up of communication and language scholars from the University of Arkansas and the Hong Kong Polytechnic University, aimed to understand how these mental processes unfold.
To explain this divide, the authors turned to social identity theory. This concept proposes that individuals define themselves in part through their membership in groups such as political parties. Because people want to protect their group’s status, they tend to view new information through a biased lens that favors their own group and denies competing groups.
This group loyalty has an effect known as motivated reasoning. When processing political news, voters often prioritize reaching conclusions that are consistent with their pre-existing beliefs over finding the most accurate objective truth. This mental habit helps people avoid the psychological discomfort of admitting that their chosen political party may be flawed.
The researchers also investigated a concept called identity-motivated elaboration. Elaboration refers to the cognitive effort a person uses to think about a particular problem. Valuable elaboration means that this mental effort is directed in a positive or negative emotional direction.
When people encounter information about their party, they tend to be willing to elaborate. They brainstorm reasons to support the information when it’s good and excuse it when it’s bad. When evaluating opponents, they elaborate with negative emotions and actively look for reasons to criticize rival groups.
The authors designed this study to test how these mental pathways function in the specific context of the 2024 election. They wanted to understand whether persuasion and attitude formation took place through central or peripheral routes. The central route involves deep and effortful thinking, while the peripheral route relies on simple mental shortcuts.
To test their predictions, the researchers recruited 231 college students enrolled in communication and political science courses at a large southern university. The average age of the sample was approximately 22 years. This group included 117 women, 112 men, and two participants who identified as gender non-binary.
In terms of political affiliation, the sample tended to be slightly conservative. There were 132 participants who identified as Republicans or Republican-leaning. An additional 99 participants identified as Democrats or leaned toward the Democratic Party.
During the experiment, each participant read two concise and informative articles written as objectively as possible. Each article was exactly 3 paragraphs, 219 words long. One article detailed the background and legal context of Donald Trump’s business record conviction. Another article detailed Hunter Biden’s illegal firearm purchases.
The researchers randomized the order of the articles so that half of the participants read about Trump first and the other half read about Biden first. After reading each text, participants completed a thought list exercise designed to measure engaged elaboration.
In the Trump article, participants were asked to write a reason why someone might refuse to vote for Trump because of his criminal conviction, and they expressed negative details. They were also asked to list reasons why a conviction should not influence a person’s vote, which represents a positive detail.
A similar prompt followed Biden’s article. Participants wrote down reasons why Hunter Biden’s conviction may be having a negative impact on his father and why it shouldn’t affect the public’s perception of the president. Finally, participants completed a six-item questionnaire measuring whether they believed each conviction was politically motivated.
The data provide evidence that partisan identity significantly influenced how participants spent their cognitive energy. Republican participants were far more vocal in defending Donald Trump than Democrats. In contrast, Democrats took the mental effort to enumerate the reasons why President Trump’s conviction is disqualified and explain in detail their negative opinions.
A similar pattern emerged with slight variations regarding Hunter Biden’s conviction. Democrats made significantly higher levels of positive arguments in defense of the president’s son than did Republicans. Republicans generated more negative opinions about Biden than Democrats, but independent voters also generated a large amount of negative thoughts.
The strength of an individual’s political identity also had a significant impact on their responses. Participants who identified more strongly with their party provided more detailed descriptions that were consistent with their identity. This means that strong Republicans are even more likely to defend Trump and criticize Biden, and strong Democrats are even more likely to defend Biden and criticize Trump.
This biased thought process directly influenced how participants viewed the justice system. The more people engage in aggressive elaboration defending a candidate, the more likely they are to believe that legal charges are political weapons. Higher levels of negative evaluation detail led participants to believe that the guilty verdict was justified and fair.
The authors noted that this attitude formation process occurred simultaneously through two different mental pathways. A central route emerged in the way participants brainstormed specific reasons for excusing or blaming politicians. Their active mental elaborations helped construct and strengthen their final conclusions about the fairness of the trial.
At the same time, the outer routes were also booming. Participants used their political party as a psychological shortcut to dismiss accusations against their group based on shared identity. This direct effect of party loyalty predicted beliefs that convictions were politically motivated, even without taking into account the laborious and detailed process.
There are several limitations to the study design that need to be considered. Reliance on a single sample of college students limits the applicability of these findings to the general American population. College students often have different levels of political engagement and demographic backgrounds than the broader electorate.
This study also focused on two specific different events. Donald Trump was an actual presidential candidate who was convicted of a crime, while Hunter Biden was just a family member of the incumbent candidate. The researchers acknowledge that these two situations carry different kinds of political weight.
Future research could extend these findings by examining a broader range of political issues of varying importance. Testing different types of scandals and policy disagreements may reveal the limits of identity-based elaboration. Studies could also collect more diverse and nationally representative samples to capture broader political contexts.
The current findings focus exclusively on the two-party system within the United States. Voters in countries with multiparty systems may process political information and form attitudes in very different ways. Exploring these mechanisms in an international context may help reveal how universal these cognitive biases really are.
The study, “Partisan Social Identity in the 2024 Presidential Election: Motivating Details on the Conviction of Donald Trump and Hunter Biden,” was authored by Jihye Park, Freddie J. Jennings, Farzana Fahmee, Nicholas Purintun, and Cindy Sing Bik Ngai.
