I don't have access to the full text of the paper that quote from the article refers, but I gather from the abstract that the idea of classifying high/low EI jobs is from the paper, not the OP. Perhaps full text of the paper has more details on how they classified the jobs.
Overall, I find it ironic that most people who say they care about EI are the ones who don't prefer to be accommodating when interacting with others with seemingly lower EI.
Overall, I find it ironic that most people who say they care about EI are the ones who don't prefer to be accommodating when interacting with others with seemingly lower EI.