&gt; Moral of the story: make babies outside of your own ethnic group.<p>That is absolutely the wrong conclusion to make from the source.  The suggestion of the source is that if two people prone to systemized-thinking mate (<i>regardless</i> of ethnicity), then the likelihood of autism is higher.<p>Your conclusion only makes sense if you believe certain ethnicities are more systemized than others.  Thus, if you are from a systemized ethnicity, you should seek to mate outside your race. I don&#x27;t think that is your intent.  My inference is that your intent was to take this research and form some moral lesson out of it that fits your world view, or a world view that is fashionable.