Can you explain this to me in simplest terms: the results revealed that ideological similarity robustly predicts holding similar attitudes about both the abortion [ = 0.538 0.076 (SE), t (830.7) = 7.1, P < 0.001] and debate videos [ = 0.847 0.047 (SE), t (824.5) = 18.0, P < 0.001]. This effect was amplified for the vice-presidential debate, for which we observed significantly more polarized attitudes compared to the neutrally worded abortion video [interaction between ideological similarity and video condition: = 0.310 0.089 (SE), t (1664.3) = 3.48, P < 0.001]. We next evaluated whether intolerance to uncertaintyassessed with the well-validated, 27-item IUS, which includes items like "The ambiguities in life stress me" (21)could account for this effect. Although intolerance to uncertainty has been linked with extremism, we did not observe any correlation between IUS and ideology [r (41) = 0.14, P = 0.35] or extremism [distance from the ideology scale midpoint; r (41) = 0.06, P = 0.69], allowing us to test for independent effects of ideology and IUS on neural synchrony