I wonder how the study was conducted. Was it only iq they tested? Did they test the social abilities of the leaders? It may have more to do with higher iq peopl

I wonder how the study was conducted. Was it only iq they tested? Did they test the social abilities of the leaders? It may have more to do with higher iq people generally having less good social skills than people with lower iq's than anything to do with the actual intelligence of the person.