The obvious question to ask of the first study is whether they controlled for the parents’ IQ (or at least things like socio-economic status).
Indeed. But I don’t have the time to read their papers (not that the article linked to the original paper), and its not my field anyway. From a practical viewpoint, good diet might give significant advantages (if not in IQ, then in other areas of health) and is extremely unlikely to cause any harm, so the expected cost-benefit analysis is very positive.
Indeed. But I don’t have the time to read their papers (not that the article linked to the original paper), and its not my field anyway. From a practical viewpoint, good diet might give significant advantages (if not in IQ, then in other areas of health) and is extremely unlikely to cause any harm, so the expected cost-benefit analysis is very positive.
Oh, that is certainly true. The only problem is that everyone has their own idea of what “good diet” means and these ideas do not match X-)
I think most people agree on vegetables, in fact this is one of the few things diets do agree on.