[cm2012]

"They may, for example, be less likely to smoke, more likely to eat healthy foods or to exercise, and so on." I would chalk up the small correlation documented to this. Higher IQ people tend to be higher on the social scale and be healthier in a large variety of ways.

[a8da6b0c91d]

Why would you make that assumption? IQ and sperm quality are probably both impacted by deleterious mutations. I would assume quality in both is measuring mutational load way before I made suppositions about SES.