Penis size and sexual selection

sexual selection and penis size

Human sexual selection

The sexual selection concept arises from the observation that many animals including humans develop features whose function is not to help individuals survive, but help them to maximize their reproductive success, which may include obstacles such as climate, availability of resources and competition from others for the female/male. This can be realized in two different ways:

by making themselves attractive to the opposite sex (intersexual selection, between the sexes); or
by intimidating, deterring or defeating same-sex rivals (intrasexual selection, within a given sex).

We are all familiar with the concept of "alpha male" and ho they get all the chicks, however everything is a bit more complex than that.

The German anthropologist Ferdinand Fellman argues that the emergence of human self-consciousness is due to an extended sexual selection, termed "emotional selection", bridging the gap between animal sexual behavior and human erotic love.

Apparently even the human language may have derived to be more complex than other primate languages due to the romantic needs of the individuals through sexual display.

It is not uncommon in the animal kingdom for some species to share sexual displays with humans, where the trait itself is not strictly sexual. Birds for example sing to attract a mate, and humans value voice in matters of sexual selection.

Darwinists believe that the human brain itself, it being so 'unnecessarily' big and expensive to maintain in terms of survival shows that it is itself a sexual trait. Since humans are social beings, often the traits that are valued by the female are those that make men stand out in the social sense. Authority, respect, wealth and power are often thought to be correlated with what the female looks for in a mate.

Human female and male sexual physiology

Female physiology and male penis
Male penis size may contribute to attractiveness

Evolutionary speaking, penis size, large or small gives no significant advantage or disadvantage to the male. The human sperm can live up to seven days and travel after ejaculation to reach the egg of the female for the process of reproduction.

When it comes to penis size though everything is less clear. Due to physiology of a male human body the penis and the ballsack is clearly visible and in ancient history it was on full display. So erections, most likely, were common and clearly visible.

The evolutionary biologist Richard Dawkins has put forward an idea that the loss of the penis bone in humans, which is present in other primates, may also be due to sexual selection by females whom are seeking clear signs of indicators of good health in prospective mates. Since a human erection is easily attainable and readily displayed (in part due to human upright posture), a penis relies on a hydraulic pumping system to reach an erection, whilst an erection failure or inability to reach a full erection is a sensitive early warning of certain kinds of physical and mental ill health and an indicator of a male's lack of fitness.

This remains true today, as a number of men suffer from erectile dysfunction primarily as a result of bad diet, lack of exercise and unnecessary stressful life.

A large penis may have some negative impact on female health due to possible rips and tears, especially at the cervix, which may cause all types of conditions from bladder deceases to urinary infections.

Penis size is attractive but not necessarily important in long-term sexual selection

When it comes to physiology, the aforementioned Ferdinand Fellman had put forward a slightly modified model of "emotional selection" comparing to the traditional Darwinian model of "sexual selection" for humans, as the center point of human evolution of consciousness (which brought about complex emotions). Part of the survival edge is due to a rare ability of humans to find mates for long term, which allows humans and females in particular to have feelings and feelings about feelings, therefore driving the proposed means of human intelligence and consciousness.

Another proposed idea is that with a long-term mate, a being can save energy from competition in the future mating seasons and use that energy to provide for the offspring instead.

There is a difference between attractiveness and looking for a long-term mate. Whilst studies in various countries have indicated that women prefer men with penises that are longer and thicker, there is no evidence to suggest that when looking for a mate a penis size matters. However, since human penis size in relation to their body size is the largest comparing to any primate it may suggest it had played a role in sexual selection in some way. Attractiveness of a male in itself is a series physical, psychological and social traits and characteristics, so penis size on it's own is of very little importance when it comes to selecting males.

Is penis size important in primates?

The average penis length of the Silverback Highland Gorilla is ~2.5 inches. They seem to be able to hold on to a few females, do the job in half the time and they are about twice as muscular or "manly" as the most muscular manly men.

One can admire the balls of the researcher who took the measurements.

Practically speaking penis sizes don't really come into it and when looking for a mate human female will prefer a confident, socially adapt male which can get an erection rather than a social donkey even when he's got with a big floppy dick. Moreover, on average women in the West report approximately 8 to 15 sexual partners in their lifetime, including one night stands, whilst men report more, which is considered an exaggeration. In that time it is unlikely that a Woman can actively select a mate based on penis size, since the majority of men come within range of average, so in reality it's a combination of other factors that contribute to the process of sexual selection rather than penis size, which although may be weighed - presents only a minor characteristic that is considered. In terms of sexual selection it is understood that women place more importance on some physical characteristics such as height and hip to shoulder ratio and social characteristics such as status, wealth and kindness.