3 ms·Fair point. It's plausible that the act of immigration selects for more motivated people.by xapata 10y agoFair point. It's plausible that the act of immigration selects for more motivated people.empath75 10y agoWhat alternative explanation would their be?xapata 10y agoWell, there's always the cultural one. Personally, I think attributing the cause to culture is sloppy research.