The paper Parasite prevalence and the worldwide distribution of cognitive ability by Christopher Epping et al suggests that the Flynn effect was partly due to a reduction in exposure to parasites and infectious diseases during pregnancy and childhood.
The paper Parasite prevalence and the worldwide distribution of cognitive ability by Christopher Epping et al suggests that the Flynn effect was partly due to a reduction in exposure to parasites and infectious diseases during pregnancy and childhood.
https://royalsocietypublishing.org/doi/full/10.1098/rspb.2010.0973