This could just a) be Flynn effect in action (although I would think that would ... | Hacker News

Hacker Newsnew | past | comments | ask | show | jobs | submit

		InitialLastName on Sept 23, 2022 \| parent \| context \| favorite \| on: Association Between Maternal Fluoride Exposure Dur... This could just a) be Flynn effect in action (although I would think that would take longer) [0], or b) there are other factors in the sample group (Canadians) that shift them slightly higher in baseline IQ (nutrition? educational exposure?). [0] https://en.wikipedia.org/wiki/Flynn_effect

rory on Sept 23, 2022 [–]

> these children were recruited from 6 of 10 cities included in the original cohort: Vancouver, Montreal, Kingston, Toronto, Hamilton, and Halifax

Probably just the difference between this cohort vs. all Canadians (urban and rural).

Consider applying for YC's Fall 2025 batch! Applications are open till Aug 4
Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact