Master of Arts, The Ohio State University, 2015, Psychology
There are many processes by which people can become more extreme in their attitudes and judgments—some more reasonable and rational, some more unconscious and motivational in nature. Across two studies, this thesis focuses on one process that has demonstrated the potential to polarize judgments: defensive bolstering. There are many concurrent theories attempting to explain why, when we feel uncertain and/or threatened, we compensate by bolstering, or extremitizing, various judgments. None of these theories, however, have manipulated threat and uncertainty in an orthogonal manner. Thus, it has been unclear whether feelings of uncertainty are driving the bolstering effects as some theories argue, whether feelings of threat are the driving force as others argue, or if there is something special about the confluence of both uncertainty and threat that is pervasive amongst manipulations in the field.
Study 1 examined the viability of a procedure which required participants to imagine hypothetical scenarios to vary threat and uncertainty. This study showed that the combination of threat and uncertainty produced more defensive bolstering than their absence. Bolstering was shown across three measures frequently used in the psychological defense literature. Study 2 then applied these vignettes to disentangle threat from uncertainty and demonstrated that imagining the scenario high in both uncertainty and threat produced greater bolstering on the same measures used in Study 1 than just uncertainty or threat, alone. Collapsing across Studies 1 and 2 in an exploratory analysis suggested that the only condition in which participants extremitized on the dependent variables was when uncertainty was combined with threat. This research suggests that defensive, compensatory bolstering effects may not be due solely to either the experience of uncertainty or threat, as many theories claim, but that it may actually rely on the experience of both.
Committee: Richard Petty PhD (Advisor); Duane Wegener PhD (Committee Member); Ellen Peters PhD (Committee Member)
Subjects: Social Psychology