In my experience there are many meanings of "intelligence". The old canard that people in the so-called 'soft sciences', for instance, aren't as intelligent as those in the "hard" neglects the issue that they actually have a tougher challenge in their research, given that researching people involves more clearly the researcher's perspective as well as the participation and perspective of the "subjects". That they discuss this in their research publications and findings simply convinces some very partisan people that they are less intelligent. While I appreciate that someone with a master's degree in English may not seem as intelligent as someone with a master's degree in math, or something, that doesn't really bear out. I think what bears out is the importance given to certain kinds of intelligence. If we consider the importance of a high math SAT score when looking at what someone says in regard to religion, I think we can probably agree that that may not be the most important issue?