Sheng nu cites studies that show that women are now breaking the tradition of "mandatory marriage" to have fewer children or marry later on in life. Other typologically similar terms that are still used in the modern lexicon of other countries and cultures show the concept has existed in some cases as far back as the 16th century. The term spinster was used to describe unmarried or single women of a marriageable age. It wasn't until 2004 when the Civil Partnership Act replaced the word spinster with "single" in the relationship history section of marriage certificates in the UK. Subsequently, at the
Marriage certificate 1850 some 75% of certificates said that; if the certificate reads "minor" or "under age", it means that, until 1929 when the law changed to 16, the bride was between 12 and 20 and the groom 14 and 20 years of age). The certificate also records the previous marital status of the bride and groom. Those not previously married were "bachelor" or "spinster." From 1858 to 1952 a previously divorced groom was listed as "the divorced husband of…" with his ex-wife’s maiden name listed, and vice versa for a divorced bride. The currently used wording is "previous marriage dissolved" with