tial for personal status mobility: in this respect, virginity plays the same role of dowries,
enhancing the girl’s value for a higher-status spouse. Finally, Gonzalez-Lopez (2004), after
interviewing Mexican fathers living in Los Angeles, reports that, for them, "protecting their
daughters from a sexually dangerous society and improving their socioeconomic future is
of greater concern than preserving virginity per se".
Most importantly, in a well-known study of the historical evolution of the family in
Britain, Stone (1990, p. 401-402) claims that, in the 18th century, " ... the value attached
to chastity is directly related to the degree of social hierarchy and the degree of property
ownership. Pre-marital chastity is a bargaining chip in the marriage game, to be set off
against male property and status right". The female has then "a powerful lever to obtain
marriage". By consequence, as Stone suggests: (i) "the most sexually inhibited class in
the population is likely to be the lower-middle class of small property owners"; (ii) "the
rise of a class of landless rural labourers and urban workers without property or status
meant the rise of a class to whom virginity was not important, and foresight, prudence and
planning were irrelevant to their dismal economic future", (iii) "the developments of the
18th century, with the progress of enclosures, the amalgamations of farms, the development
of cottage industries and the growth of towns, were causing a considerable increase in the
size of such a class." Stone concludes saying that, therefore, "the principal cause of the rise
of illegitimacy in England in the late 18th century was (...) a rise of the proportion of the
propertyless with no economic stake in the value of their virginity". The change of attitudes
towards premarital sex was then dictated by a change of economic circumstances.
As for contemporary society, in the Western World the revolution in sexual behaviour
has been "anticipated" by some major socio-economic changes like, for instance, the in-
creased participation of women to the labour market, and an overall reduction of income
inequality and social stratification.
In this paper, we propose a theoretical model to explain that the incidence of virginity
may depend on (i) income level, (ii) the relative economic position of women with respect
to men, (iii) income inequality, (iv) the degree of social segregation, and (v) strategic inter-
action between social classes.
Central to our model is the marriage market. Potential partners belong to two different
social classes: the rich and the poor. Women value prospective spouses only in terms of
income, while men value also virginity, in girls. Mating is, to some extent, random: a rich
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