The women, who were born in the late 1950s and early 1960s and mainly married in their mid-20s, were also quizzed about how often they argued about everything from sharing chores and childcare to money, drinking and other women.
Depressingly, in most of the marriages, happiness and communication started to decline from the beginning and never improved. Sixty-five per cent of the women said they were less and less happy in the marriage as time wore on.
And 85 per cent talked to and laughed less with their spouse, with no sign of things getting better.
In a small number of cases, communication and happiness did start to grow again, but only after about 30 years. Even then, levels of happiness and communication "did not return to honeymoon levels", journal Social Science Research reported.
The study, from Brigham Young University in Utah, showed the early years of marriage to be marred by increasing numbers of rows, reaching a peak 10 to 15 years in.
Couples on low salaries and who had lived together before marrying were more likely to have blazing rows. Division of childcare and chores might have been another flashpoint, the researchers said.
However, the study found there were fewer arguments after 10 years, and by 35 years, couples seemed to agree on more than they did in the early years of marriage.
Dr Pam Spurr, a relationship expert and agony aunt, said: "It's quite normal for relationships to go through periods of adjustment. With commitment, they can negotiate this phase and come out stronger."
- Daily Mail