I’m not a professional academic, but I’m reading that sentence the same way you are. It sounds like the conclusion here is that not ever being in a relationshi

I’m not a professional academic, but I’m reading that sentence the same way you are. It sounds like the conclusion here is that not ever being in a relationship by your late twenties AND having a high intelligence predicts childlessness. For that to be interesting/worth mentioning, I would assume not being in a relationship by your late twenties and having mid level intelligence does NOT predict childlessness, or at least not as strongly. I’m guilty of jumping straight to the comments after not reading the article, however, so there might be more details either supporting/refuting that conclusion that I’m missing, I’m just going off of your quote.