Parameter values for fixed effects in the best-fitting linear mixed-effects model of mean amplitude differences for the political sentences (false - true) in the 300–450 ms time window for the political speaker in Experiment 1.

In addition to the fixed effects Assertiveness, Likability, ROI and their interactions, the model included random intercepts by participant and by-participant random slopes for ROI. Abbreviations: LIKABLE - how likable individual participants judged the political speaker to be (indicative of the warmth dimension); ASSERTIVE - how likely they judged him to be able to assert himself (indicative of the competence dimension).