I do not have a shred of non-anecdotal evidence for this claim, but I strongly suspect that such a link exists. It is associated with lack of initiative, a desire for security, conformism and mediocrity. Rational behavior, associated with intelligence and moderation.
Rationalism implies an openness to correct one's positions, based on real-world experience.
Egoist rationalism primarily tries to satisfy the individual's self-interest. It does not necessarily translate into opportunism or lack of principles. Altruist rationalism also takes the interests of others into account, but as a matter of principle rather than convenience. Its inherent extremism implies a considerable dose of self-deception and a tendency to negate facts that contradict one's ideas. Cruelty , which is associated with all sort of perversions and psychopathologies.