The only way to get scientifically reliable estimates of extramarital sex is to use nationally representative samples.Three studies have used nationally representative samples.Human monogamy's legal aspects are taught at faculties of law.
The issue of extramarital sex has been examined frequently in the United States.
Many surveys asking about extramarital sex in the United States have relied on convenience samples.
The amount of extramarital sex by women is described as "universal" in 6 cultures, "moderate" in 23 cultures, "occasional" in 9 cultures, and "uncommon" in 15 cultures.
These findings support the claim that the reported amount of extramarital sex differs across cultures and across genders.
philosophical anthropology and philosophy of religion, as well as theological ones.
The word monogamy comes from the Greek μονός, monos which means alone, and γάμος, gamos which means marriage.
These studies have found that about 10–15% of women and 20–25% of men engage in extramarital sex.
Research by Colleen Hoffon of 566 homosexual male couples from the San Francisco Bay Area found that 45% had monogamous relationships.
In all, these account for 16 to 24% of the "monogamous" category.
The prevalence of sexual monogamy can be roughly estimated as the percentage of married people who do not engage in extramarital sex.
It is important to have a clear understanding of the nomenclature of monogamy because scientists use the term monogamy for different relationships.