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The relationship between personality traits and biased assimilation, evaluating arguments, and persuasive messages more favorably if supporting pre‐existing attitudes, lacks adequate research. Research suggests that higher narcissistic traits are associated with biased reactions. Additionally, research suggests that people with greater scientific reasoning abilities have more biased reactions to information that challenges their attitude, as they more easily locate flaws on topics that oppose their beliefs. Participants (N = 260) completed measures to identify their views on trans bathroom use, as well as other personality and attitude measures. They were randomly assigned to read one of the two articles using fake scientific data that either supported trans people using a bathroom reflecting their gender identity or that they should use a bathroom matching their sex‐assigned at birth. Participants rated the quality of the article significantly higher when their opinion on bathroom use was congruent with the article than when it was incongruent. We used regression analyses with participants' perceptions of the quality of the article as the outcome variable and scientific reasoning scores, narcissism personality index scores, open‐mindedness scores as predictor variables. In the mismatch group, the higher the scores on scientific reasoning, the lower the ratings of the quality of the opinion incongruent article. In the match group, the higher the scores on open‐mindedness, the lower the ratings of the quality of the opinion congruent article. This research suggests that bias reduction is necessary to function in a world where scientific facts are called into question on a consistent basis. [ABSTRACT FROM AUTHOR]

Two methods by which people make prejudicial yet justifiable judgments were assessed in a simulated college admissions paradigm in which participants evaluated 2 applications. In the preference condition, the stronger applicant was described as a member of a different political party than the participant. In the control condition, no political party was indicated. Supporting a political partisan prejudice effect, among strong partisans, the stronger applicant was favored in the control condition, but the weaker applicant was favored in the preference condition. No effect was found for weak partisans. Additionally, participants supported their biases by altering the importance of (Study 1) and distorting the strength of (Study 2) different types of application information. [ABSTRACT FROM AUTHOR]

The scientific impotence discounting hypothesis predicts that people resist belief-disconfirming scientific evidence by concluding that the topic of study is not amenable to scientific investigation. In 2 studies, participants read a series of brief abstracts that either confirmed or disconfirmed their existing beliefs about a stereotype associated with homosexuality. Relative to those reading belief-confirming evidence, participants reading belief-disconfirming evidence indicated more belief that the topic could not be studied scientifically and more belief that a series of other unrelated topics could not be studied scientifically. Thus, being presented with belief-disconfirming scientific evidence may lead to an erosion of belief in the efficacy of scientific methods. [ABSTRACT FROM AUTHOR]

The present study examined whether individuals' current political worldviews would bias perceptions of historical information gathered over the course of their lifetime. Kent State University students from 1995 and 2000 reported their political ideologies (e.g., conservative, liberal) and responded to items assessing their culpability and global attributions about the shooting of demonstrators by the National Guard at Kent State in 1970. The 1995 data revealed consistent support for biased responding to culpability and global attribution items. The 2000 data replicated the political ideology differences of the 1995 data. However, by including knowledge of the incident as an independent variable, the 2000 data revealed that the political ideology bias was strongest among people reporting high knowledge about the event. [ABSTRACT FROM AUTHOR]