A theory that can explain this finding from an evolutionary perspective is the parasite-stress theory which explains that an increase of infectious disease can cause humans to evolve selectively according to these pressures. Evidence also shows that as disease risk gets higher, it puts a level of stress on mating selection and increases the use of polygamy. In regions such as Sub-Saharan Africa the use of polygyny is commonly practiced as a consequence of high sex-ratios more males born per females and passing on heterozygous diverse genetics from different females to offspring. Another reason that polygynous communities have larger age-gaps between spouses is that intrasexual competition for females increases as fewer females remain on the marriage market with males having more than one wife each , therefore the competitive advantage values younger females due to their higher reproductive value. Smaller than average age-gaps[ edit ] Comparatively in Western societies such as the US and Europe, there is a trend of smaller age-gaps between spouses, reaching its peak average in Southern Europe of 3. Using the same pathogen-stress model, there is a lower prevalence of disease in these economically developed areas, and therefore a reduced stress on reproduction for survival.
Age disparity in sexual relationships
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Coitus is derived from the Latin word coitio or coire, meaning "a coming together or joining together" or "to go together", and is known under different ancient Latin names for a variety of sexual activities, but usually denotes penile—vaginal penetration. Lerner and Laurence Steinberg state that researchers also "rarely disclose" how they conceptualize sex "or even whether they resolved potential discrepancies" in conceptualizations of sex. While most consider penile—vaginal intercourse to be sex, whether or not anal or oral intercourse is considered sex is more debatable, with oral sex ranking lowest. Human mating strategies and Pair bond Copulation ranges from a purely reproductive activity to one of emotional bonding. For example, sexual intercourse and sexual activity in general often play a strong role in human bonding. One possible reason for this distinct biological feature may be formation of strong emotional bonds between sexual partners important for social interactions and, in the case of humans, long-term partnership rather than immediate sexual reproduction. The resulting cooperation encourages collective tasks that promote the survival of each member of the group.
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Stories about Sex with Older Women I was 19 years old and they put me with a host family for the first 2 weeks until I found a place of my own. When I first moved in with the host family, I appreciated how beautiful Canadian women are. This lady is married to a guy twice my size and had two kids.