According to more recent studies, what factor is shown to result in poorer mental health and fewer benefits from marriage?

Question

Quizplus · Accepted Answer

Studies have indicated that marrying earlier than desired or marrying later than desired can result in poorer mental health and fewer benefits from marriage. Marrying outside of one's racial and/or ethnic group has not been shown to consistently have a negative effect on mental health or marital benefits.

According to More Recent Studies, What Factor Is Shown to Result