| Undergraduate GPA predicts lifetime earnings[1], incoming test scores and GPA are highly predictive of both advanced degrees (which increase earnings), and increased earnings within degrees [2], [3]. I suggest these effects are because being a good student aka "eating books" is correlated with conscientiousness. They show up to lectures, prepare, and test well. And conscientiousness is very highly correlated with lifetime achievement, AND fufillment [4]. So measuring conscientiousness, and signalling high conscientiousness is a really good idea. IQ is great, but conscientiousness is how you get things done [5] 1. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9004755/ 1.b (edited) https://www.washingtonpost.com/news/wonk/wp/2014/05/20/heres... might be better. I thought this was "common knowledge"! 2. https://mpreiner.medium.com/what-is-the-impact-of-your-high-... 3. https://www.ssa.gov/policy/docs/research-summaries/education... 4. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3498890/ 5. https://docs.iza.org/dp8235.pdf |
That is...an extremely narrow study to use to make that broad an assertion. GPA of two classes from 2010 at a single business school in China, their starting salary, and then their salary in 2018?