Seems like some of the OEs they mention the article are a contributing factor, but it also seems very likely that people who were aware of their higher IQ are m

Seems like some of the OEs they mention the article are a contributing factor, but it also seems very likely that people who were aware of their higher IQ are more likely to go to doctors and psychologist, and therefore more likely that any other conditions are also caught. A population with a disproportionate level of observations will yield more results.