IMPOLITIC BUT CORRECT ANSWER: The lower the distribution of IQ below 106, the more socialist, and the higher the distribution of IQ above 106 the more individualist. The higher the impulsivity (testosterone) the more insular the polity needs to be. The lower the impulsivity (testosterone) the more inclusive it can be. The lower the literacy the more authoritarian it must be. The higher the literacy the less authoritarian it can be. In all cases, smaller polities that reflect kin selection are preferable to larger heterogeneous polities.
The data supports all these positions.