"Liberalism was associated with stronger conflict-related anterior cingulate activity, suggesting greater neurocognitive sensitivity to cues for altering a habitual response pattern."Essentially, conservatives tend to rely on ‘persistence’ in a ‘habitual response pattern,’ despite signals that this response pattern should change... (i.e. "stay the course")
Liberals have more gray matter in a part of the brain associated with understanding complexity - the anterior cingulate cortex, while the conservative brain is bigger in the section related to processing fear - the right amygdala.
Liberal: ...generous, abundant, lavish, broadminded, tolerant, enlightened, charitable, free, advanced
Conservative: ...stingy, miserly, reactionary, regressive, bigoted, prejudiced, biased, narrow-minded, strict
Synonyms: obstinate, inflexible, uncreative, hide-bound, unimaginative, undaring, unprogressive, red-neck