Unfortunately that specific study is notorious for blowing past the peer review process: https://www.gwern.net/docs/iq/2014-haier.pdf https://www.gwern.net/docs

Unfortunately that specific study is notorious for blowing past the peer review process: https://www.gwern.net/docs/iq/2014-haier.pdf https://www.gwern.net/docs/iq/2014-haier.pdf The reviewers shared a 20-point critique of the paper prior to publication that was ignored by the publisher and researchers. In fact, their results clearly showed the existence of a general intelligence until they performed an unnecessary rotation which is mentioned in Appendix B point 7. Whether or not IQ has human meaning, social value, or is the "end-all" are subjective arguments that are not within the scope of IQ study. Statistically we know that so far out of all the psychometric scores that have been invented it is the strongest one. Better measurements will most definitely be invented, but they haven't so far.