Waar komt de uitdrukking 'dom blondje' vandaan?

Thuis vroegen we het ons af, maar kwamen er niet uit.

Mijn oma zegt dat het al een oude uitdrukking is die ze al gebruikten toen ze zelf jong was.

Iemand?

Ik heb even wat op het Net gezocht en ik kwam hierop uit:

Check this out:

Of the 50 subjects with learning disabilities, 10 (20%) were blond. In contrast, 121 of 1067 subjects without learning disabilities were blond (11%)... subjects with learning disabilities were nearly twice as likely to be blond compared with non-LD subjects.... These results raise the possibility that melanin may be involved both in the development of motor dominance and independently in the devilment of neural systems which, when maldeveloped, result in learning disabilities. (Schachter, Ransel & Geschwind (1987) Associations of Handedness with hair color and learning disabilities Neuropsychologia 25: pp. 275)

Not conclusive (the sample with learning disabilities is hell-of-small), but some more information which indicated that blondes had higher rates learning disabilities and were more likely to be left-handed was very interesting. I don't really know what to make of this. But food for thought (the idea that "blondes are dumb" might come from learning disabilities perhaps?).

Volgens mij was het laatst wetenschappelijk bewezen dat haarkleur helemaal niets zegt over intelligentie... gewoon een fabeltje dus... maar waar het vandaan komt???