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As far as the Flynn effect is concerned, it's possible that the benefits of general increases in public health (to which the Flynn effect is oft attributed, tho
by jkimmel 14y ago
As far as the Flynn effect is concerned, it's possible that the benefits of general increases in public health (to which the Flynn effect is oft attributed, though somewhat more controversially in recent years) negated the effects of lead on a large scale. However, this does not mean that the Flynn effect would not have had a greater observable magnitude had lead exposure not been so high.
Part of me agrees with your overall conclusion about the corollary nature of the research as a whole, but those are my two cents on that particular point.
- colomon 14y agoSure, it's possible (even probable!) there are any number of things affecting IQ. I'm just pointing out that if you'd plotted raw IQ levels versus time, the graph would have the opposite sign from what you'd expect from Drum's lead hypothesis. There may be an explanation that makes it all fit together, but it somehow needs to be addressed, not just ignored or hand-waved away.