Studies carried out overseas indicate that for both men and women, marital satisfaction tends to follow a U-shaped curve over the course of a marriage. Couples reach the bottom of the curve after about 10 or 20 years.
根據國外研究，夫妻雙方對婚姻的滿意度常呈現 U 型，處於滿意度谷底的，正是結婚一、二十年的中年族。