I feel like you'd have to content with test reliability, correlation with other ...

		throwaway5752 on May 22, 2019 \| parent \| context \| favorite \| on: IQ rates are dropping in many developed countries I feel like you'd have to content with test reliability, correlation with other measures of intelligence, and the general multi-decade upward trend (not specific to 1970s, the Flynn effect). It's possible there is something to this.