23 (A) The researchers also see big changes in relatively new marriages in younger couples. (B) In the interviews, only 1 percent of women said they had been unfaithful to their husbands in the past year. (C) At the same time, experts say that surveys appearing in sources like women’s magazines may overstate the adultery rate. (D) And interestingly, it helps explain why different studies produce different estimates of infidelity rates in the United States.