The Biological Imperative of Polygyny

In his excellent post Dateonomics, our friend Taylor talks about the sociological argument for polygyny (one man having multiple wives), especially in the context of the mainstream LDS Church. Here I’d like to talk about the biological argument for polygyny.

If you assume that the main biological goal of a species is to reproduce, then – bluntly speaking – females are much more valuable than males. If a woman (or a female animal, more broadly) does not have children for whatever reason (early death, infertility, intentional childlessness, etc.), those 8 or 10 or however many children she could have had can never be recouped or recovered and the children those children would have had can never be recouped or recovered, either. It is a permanent loss to the species as a whole.

On the other hand, if a man (or a male animal) does not have children, that does not mean that there have to be any fewer children total. Any of the other males could step in for him. A man could have 1,000 children. Most women could reasonably have 10 or 15 at the most, and though there are some women who could have more, none of those outliers even fleetingly approaches the number of children an average man could have. A species is limited in its generations by the female members of that species. And yet there are a roughly equal number of men and women in the world. The result? Superfluous men. The women are not biologically dispensable, but most of the men are. You see this in other species, too. You only need one ram per some forty or fifty ewes1, and only one rooster per ten hens2.

Females being biologically indispensable is one of the reasons forced monogamy is such a tragedy. Ideally, from a biological perspective, every woman would have children. There are slightly more men than women world-wide (in the under 65 age bracket)3, and so you’d think that it would all work out just fine. However, there are more “unmarriageable” men than there are “unmarriageable” women, which skews the demographics of decent people under 65 in the other direction – there are more decent women than decent men.

Let me explain. 

Men are much more likely4 to commit violent crimes than are women. If you assume that few people would want to marry a violent criminal, this takes many more men out of the running, so to speak, than it does women. 

If we assume that not many people would want to marry someone with an abnormally low IQ, this takes more men than women out of the running, too. More men than women have genius-level IQs (seven out of every eight people who score in the top 1% on IQ tests are men), but there are also more men than women who have idiot-level IQs5,6. The mean intelligence is the same or nearly so, but the distribution (or you could say, standard deviation) is wider for men than for women.

All this is to say that if you took all the decent men and all the decent women (mind you, in this case I’m using decent to mean marriageable – for the purposes of this post that means someone who is not a violent criminal and does not have a very low IQ – without any of the moral implications that the word decent often has) and paired them off, you would be left with extra women who, in a strictly monogamous society, would likely be doomed to spinsterhood and childlessness, thereby forever depriving the human race of the children they could have had, or else go and marry a low-quality man. They may feel forced into such a marriage for the sake of having children, but issues can (and often do) arise with the children of low-quality men, leaving us to conclude that this is also not ideal.

Additionally, from a primitive, biological standpoint, there are likely to end up being  fewer men left than women due to conflicts. For the entire history of humanity, with a very few exceptions, men have been the warriors. This makes a lot of sense, as the average man is stronger, faster, and better mentally suited (more aggressive and better able to compartmentalize things) for war than the average woman. This works out just fine, as the women in a primitive situation would spend much of their time in a less-than ideal situation for soldiering due to pregnancy, breastfeeding, and/or needing to care for young children. However, this means that in conflicts (which have been around as long as we have), more men end up dying than women do. This can have significant, even drastic impacts on the overall ratio of men to women, such as in the Soviet Union after WWII, when there were only 4 men per 5 women7. (In Soviet Russia, proper, it was even more dramatic, with 3 men per 4 women8.)

The solution from a biological perspective? Allow some of the decent men to marry multiple decent women, enough to take care of the surplus of women and simultaneously maximize the genetic potential (and number of children) of the group as a whole.

This surplus of decent women is one of the reasons that polyandry (the practice of one woman having multiple husbands) is a biologically unjustifiable practice, in my opinion. There is already a relative shortage of decent men. Why exacerbate the problem by allowing one woman to hog limited resources when one man would work just as well, biologically speaking?

Another reason polyandry is biologically unjustifiable is the uncertain paternity of the children. A woman has the advantage of being able to be completely and utterly certain beyond a shadow of a doubt that a child she thinks is hers truly is. A man has no such privilege. He may be intellectually sure that a child is his, but there is no biological surety he can have. (Obviously now there are genetic tests that can determine paternity, but historically – and biologically speaking – that has not been the case.)  People naturally want to take care of their own children. In a polyandrous relationship, on the surface it seems wonderful. The children can have a mother figure and multiple father figures. There’s much talk about how the lack of a father figure leads to all sorts of ills, so surely having multiple would be even better, right?

Except it doesn’t quite work like that. In polyandry, none of the men is sure that the child is his, (although there could be exceptions to this, such in the case of the male partners in the polyandrous relationship being different races) and so none of them fully act like a father. It is similar to the bystander effect9, which is when people are more likely not to act in an emergency (call 911, help someone who is struggling) if there are other people present, because they assume the other people will instead. Instead of the child of polyandry having multiple strong father figures, they are likely to wind up having none. An additional downside is that having multiple stepfathers is dangerous for children.  Studies have shown that stepfathers are many times more likely to assault10, abuse11, and even kill12 their stepchildren than biological fathers are. This is called the “Cinderella effect13”.  Although there does not seem to be much research on the “Cinderella effect” specifically in the context of polyandry, I think that it is likely present to at least some extent.

In contrast, in a polygynous marriage, the parents of each child are clear. Each child has one committed, invested father and one committed, invested mother, and additional mother figures who are not primarily responsible for the child but are still interested in their success.

The biological imperative for polygyny shows up in other places as well. A study done by the dating app OkCupid shows that women on their site rate 80% of men on their site as being below average in attractiveness13. Obviously that data could be skewed, but it is still reflective of the fact that women, as a whole, are choosier than men are when it comes to selecting a partner. (For comparison, in the same study, men rate 50% of women as below average and 50% of women as above average in attractiveness – exactly what you would expect.)

From a biological perspective, this makes sense. If a woman is going to invest 9 months of pregnancy and (in a primitive setting) at least a year of breastfeeding into one of her children, she’s naturally going to want to be choosy as to who the father is. In a primitive setting, she would want or need the protection of a strong, capable man while she is especially vulnerable during pregnancy and postpartum, and she doesn’t want to (nor does it make sense to) spend that much of her life on the offspring of a loser. Her best chance at long-term genetic success is to have children with a beautiful, strong, intelligent man so they (her children) will be beautiful, strong, and intelligent as well, thereby maximizing their chances for genetic success and so forth.

Hence women want the top 20% of men, and if polygyny is allowed, every woman can have a man in the top 20%, rather than settling for someone inferior. Biologically, 20 men to every 100 women is a workable number if polygamy is allowed, and this promotes many high-quality children, the biological goal for all species. The strongest, most capable men get the most breeding rights. They have strong children, and the species as a whole prospers.

To sum up: the biological goal of any species (divorced from any morality or ethics) is to reproduce as prolifically and successfully as possible, with a maximal number of strong, healthy children. In order to do this, you need to maximize the number of female members of that species who are  having children, as they are the gatekeepers for the total number of children in any given generation. In a society where only monogamy is allowed, there end up being extra females who cannot have children due to the lack of a mate. The natural solution is to allow at least some polygyny so that the species does not shortchange itself in the coming generation.

And that is the biological case for polygyny.

Why Plural Marriage?

Note from the blog owner: Jason is a new contributor to the blog. This is his first post.

A deep and sharp question that I have been asked is, “Why do you need more than one wife?”. To me, that is a damn good question. This simple question has provoked me to find out if I, in fact, need more than one wife, and why would I have that need. I have concluded that plural marriage isn’t about my needs, wants, or desires.

The true questions that should be asked are, “Why does a woman need a husband? Can she not do it on her own?” The statement that I wish to present, to provoke your thoughts is that plural marriage is more about the needs of a woman than that of a man.

I will give the reasons that I feel a woman should be married and why she needs a man. Before I go into these thoughts, I want to speak of marriage.

Marriage is simply a covenant between two people or two entities, for that matter. In the Bible, we are told that the Messiah will marry His people. This is done when we take His image in our countenance or take His name upon us (See D&C 20:77 Covenant renewed through the sacrament). As we see that a marriage is not always about a ceremony, but about a shared agreement. We see Isaac, son of Abraham, take his newly found bride into his tent and consummated the covenant with her, through sexual intercourse, prior to any ceremony being performed (see Genesis 24:65-67).

We also see that a man can marry more than one at a time, as we read a parable from Jesus in the New Testament, book of Matthew (Matthew 25:1-13). Jesus spoke of the Kingdom of God is like unto ten virgins. So, the children of God, those whom Jesus, the Christ will covenant with, are like unto ten virgins preparing to marry the Bride Groom, the Messiah, himself. If Jesus wanted us to believe in monogamy only, he would have said the Kingdom of God is like unto a virgin…not ten of them.

Our modern society promotes a one man, one woman marriage. If you think about it, this is backed by the Gospel of Jesus Christ, but in a different manner. Marriage is between a man and a woman, but the man can make that covenant with more than one woman at a time. Each woman is given a husband to cling to, it just happens to be the same husband that another woman claims. 

In our society today, we are being taught the differences between a Free Market and Socialism. I would like to make an analogy between economic systems and marriage.

Monogamy is like unto Socialism. In a monogamous society, every man gets one wife, even if they do not really deserve what they received, and it is regulated by the government. There is much abuse in this type of society, as some men have not earned a place to properly provide for a woman. Too often, an abusive man will be left alone, only to take on another woman, due to the overabundance of available and seeking women.

Plural marriage is like unto the Free Market, where a man can earn as many wives as he can afford to obtain. He must do the work to keep the wives, and he must learn to adjust to the needs, wants, and desires in an ever-changing and growing home.

In plural marriage, the man must do most of the work (emotional and spiritual) and the women receive all the fruits of his labors. The women stand to gain more benefits than the man, and yet the man’s love (and self-worth) keep growing with his ever-growing family. This love is what sustains him through his relations, just as a bee making honey, receives the honey as food to feed himself.  

 The first reason that I feel a woman needs a man is a basic concept. In simple terms, there needs to be opposition in all things.  In Ancient Chinese philosophy, yin and yang is a concept of dualism, describing how seemingly opposite or contrary forces may actually be complementary, interconnected, and interdependent in the natural world, and how they may give rise to each other as they interrelate to one another. (https://en.wikipedia.org/wiki/Yin_and_yang).

I have asked different persons if they think the white part of the Yin Yang symbol is male or female. Most tell me that they thought it was female as she gives life to a child. When a child is conceived, it is the male that gives the living part to the union. He will plant his seed into the female who will grow the child within her. We often attribute characteristics of Yin to a Yang type person, and vice versa. Both parts of a relationship have their qualities that are distinct to themselves. When a mate finds its other half, it feels whole again.

When I speak of opposition, I don’t mean fire and water, pain and pleasure, or even up and down.  Opposition in relationships should be that one that compliments the other, such as one partner likes to do work outside gardening, while the other one will work inside doing dishes. This doesn’t mean both can’t go outside to work, but each may prefer to do a different task.  A woman needs a man who is the opposite of her, and yet compliments her in her goals of raising a child. He will build the house, while she will make the house a home. He will plant and harvest food and she will make it a meal. They complement each other in their tasks. In plural marriage, this is magnified where many hands make work lighter. Instead of one woman trying to do multiple tasks in part, multiple women can do a few tasks each to completion.

A woman’s need to be with a man has always been a familiar reason; a man can provide a shelter, food, and safety for his family. I spoke of this briefly in the above paragraphs. I have married shorter women, who often can use my height and long arms to reach items on the top shelf. When I milk our goats, I can do it in a third of the time that it takes my wife. I can carry full buckets of water without breaking a sweat, while my wife will struggle as she carries them to water the sheep.

Now I am not saying the women need a man just because he is stronger or taller than them. A man can provide much, with a decent job, or good working skills, leaving other skills for the wives to help with. There is something to be said about getting a hug from a motherly woman after an emotional day, or a kiss on the knee after playing too roughly. I can do most of what a woman can do in a house, but I am truly aware that they do it so much better. When a man provides for a woman through his labors, she will provide the children for him, raising them in righteousness.

A woman doesn’t need to join a plural family to enjoy a long, fulfilling relationship with her husband. If there are enough men to provide well for the women, then monogamy is well suited for this society. Today, we see an attack on men and women. Men are told not to be masculine and a woman can be a man claiming to be a woman. If society cannot provide strong men to fulfill their role and strong women to fulfill theirs, then the society will fall. With fewer men stepping up, the availability for women finding a good man is going down. Women will start seeking plural marriage as an option to help her attain her goals and growth for her family.

When a man marries plural women, the children can have multiple mothers to gain advice and experiences. The children do not have to go to a babysitter, who usually is physically and emotionally overtaxed and financially underpaid. The children can stay in the home and stay close to the other children being raised with them, keeping out introductions of community illness, newly discovered unpleasant habits, and other issues when being raised in a daycare environment, from other families. 

I feel a woman’s needs for a man are the emotional, sexual, and spiritual needs that she can only receive from a man of God. There have been men throughout history who have had more wives than they can manage, such as King David and King Solomon. We have read how God does not approve of his daughters just being a number to their husbands, or worse, being abused or neglected.

We have also seen in past times and modern times, when a man thinks his salvation is attached to the women he marries, he will marry young women so that he may have much offspring. In the past, a girl as young as fourteen could be much wiser and ready to raise a family. Today, these young girls are not ready for such responsibility. Even if the girl has had to raise her siblings, there are laws and morals that dictate marriage should be saved for consenting adults.

A man of God will show some characteristics of God, such as kindness, patience, understanding, charity, meekness, forgiveness, and humility. As he learns how to communicate with his wife, they will grow in a bond that cannot be broken, except by themselves. He will learn to see a flower that is her favorite, or to make a meal that is more than just nutritious, but also comforting to her.

As a man accepts more wives into his life, he must separate his interactions and get to know each wife individually. When a plural man can do this, he is able to see to their individual needs, while maintaining the well-being of the family.

Too often, women who have been separated from a marriage through divorce, are left to fend for themselves. Often a woman becomes hardened and off balance. She is not able to maintain her needs, as well as the needs of her children, and she lets go of herself to take care of the children. It is to be applauded for the efforts of women everywhere, who take care of the needs of children, and many times, it is someone else’s children who also benefit from the love she shows. But day after day, she gets increasingly drained and soon is not able to function at top quality.

When a woman joins a plural family, her burden is made lighter, and her cup of vitality is refilled, even one drop at a time. In plural marriage, though it is tough at first to find one’s place, it can be very comforting and will ease the burdens of single parenthood.

I have found that a man is able to love more than one woman at a time. He can show love to each one, according to their needs and their personality style.

A woman can have relations with many men at once, but I believe she will choose to love only one man at a time. This woman will love with all of her heart that one man until she can no longer do so. There is no doubt that this cycle has been revolving in the universe from the beginning of time and seeks no end.

We can have as many different views as we want, but in the end, there is nothing like the love between a man and a woman.

Why plural marriage? A man is able to maintain a relationship with multiple women at the same time. Women are also made to find the man who best suits their needs, wants, and desires. There are many men out there who want a wife. Are they doing what the Gospel teaches us on how to love or are they just taking advantage of the system? Men need to step up their game and presentation in order to receive the prize.