I think it's too general a question. I would be tempted to say yes, given that aspies are less prone to small talk, and I think small talk does very little in the way of enhancing intelligence. (Maybe small talk helps NTs learn more than it helps Aspies.) I bet that if you did studies and plotted the result, you would see very little correlation. Of course, most tests to measure intelligence are pretty subjective anyways, and it also varies depending on what type of intelligence you're measuring.
I usually reject questions like that, because a conclusive yes or no answer could lead to one side discriminating against the other.
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Curiosity is the greatest virtue.