The Hypothesis about the effect of general intelligence on individual preferences and values may also have implications for national differences in their characters, institutions, and laws.  More intelligent populations may hold different collective preferences and values than less intelligent populations.

If more intelligent individuals are more likely to be liberal and atheistic, and if more intelligent men are more likely to value sexual exclusivity, then it follows that, at the societal level, populations with higher average intelligence are more likely to be liberal, to be atheistic, and to practice monogamy than populations with lower average intelligence.  Data indeed do confirm these macrolevel implications of the Hypothesis.