That also is why the GRE discontinued the old analytical puzzle section, which used to be 1/3 of the exam (along with math and verbal). The scores were bimodal:

That also is why the GRE discontinued the old analytical puzzle section, which used to be 1/3 of the exam (along with math and verbal). The scores were bimodal: Those of us who'd done a lot of logic puzzles in school got perfect scores, and those who hadn't did much worse. It turned out not to be a good indicator of anything meaningful.