Check out my previous postings in this thread. The causal argument I proposed there runs from cognitive styles (grounded in our "brain chemistry" - I believe) to political ideology. One empirical proof of the causal direction might be found in political preferences of E. European immigrants: many of those who used be communist party activists turned into Repug supporters while many dissidents (anti-communist by definition) turned lefties in the US (myself including).
How else would you explain these ideological "crossovers" if not by cognitive styles? Those who liked certitude guaranteed by authority were with the authoritarian "communist" party in E. Europe and turned into an authoritarian party in the US. Those who were dissidents and disliked such authoritarian rebelled against the authoritarian "communist" party in E. Europe and rebel against the authoritarian repugs here.
Wojtek