This question is answered in the interview. She is saying that a household with a stable long lasting relationship is what’s driving these better outcomes. She’s also saying that in America marriage (unfortunately) seems to be the only way to keep people together for a long while (long enough for a child to not experience a parade of parents by the time they are 15 according to the article).
In my personal opinion. I think what she’s stumbled on is yet again proof of Americans hyper individuality rearing its ugly face. The Europeans can stay together longer without the marriage piece of paper because
1) Selfishness derived from hyper individuality doesn’t drive people to nope out of relationships at the first sign of minuscule problems or one side not getting their way
2) Since over there not everything is an economical benefit proposal people value the relationship with different metrics than our countrymen and women do.
In my personal opinion. I think what she’s stumbled on is yet again proof of Americans hyper individuality rearing its ugly face. The Europeans can stay together longer without the marriage piece of paper because
1) Selfishness derived from hyper individuality doesn’t drive people to nope out of relationships at the first sign of minuscule problems or one side not getting their way
2) Since over there not everything is an economical benefit proposal people value the relationship with different metrics than our countrymen and women do.