/sci/ - Science & Math

http://www.pnas.org/content/early/2018/06/05/1718793115
>This establishes that the large changes in average cohort intelligence reflect environmental factors and not changing composition of parents, which in turn rules out several prominent hypotheses for retrograde Flynn effects.

PopSci:
https://www.sciencealert.com/iq-scores-falling-in-worrying-reversal-20th-century-intelligence-boom-flynn-effect-intelligence
>"This is the most convincing evidence yet of a reversal of the Flynn effect," psychologist Stuart Ritchie from the University of Edinburgh, who was not involved in the study, told The Times.

Was the Flynn effect just a mirage after all?