This idea, the effect that punishment can improve performance, was what participants thought they were testing in Milgram's famous learning and punishment experiment that you've probably heard about if you're a psychology student.
Em todas as culturas os homens preferiam  mulheres mais jovens que eles; na média, eu acho que eram 2,66 anos. E também em todas as culturas as mulheres preferiam homens mais velhos que elas,