An only child is just as happy as everyone else. In fact, as kids, they are probably happier. But throughout life, they have just as many close friends. They even enjoy more career success. As they grow older, they do not feel more burdened by aging parents.
The personalities of only children are similar to first borns. However, they have higher levels of ambition, independence, character, and intelligence. They are also better adjusted. Contrary to popular belief, they are no more narcissistic or selfish.
Today, the number of only children is increasing. In the US, the rate is between 20% and 30% of families.
Related: How a second child affects your entire life, according to research
In this article:
- Only child personality traits
- The myth of only child syndrome
- Only child vs. first born personalities
- Are only children lonely?
- Do they suffer from depression?
- The one child family
- Only children as adults
- How only children deal with aging parents
- The surprising downside: obesity
- The percentage of only children is increasing
Only child personality traits
Ambitious
Researchers combined the data from 141 studies of birth order. Overall, only children were more ambitious. They even topped first borns on ambition.
These kids do not compete for their parent’s attention. As a result, parents are more likely to notice and praise achievements. Also, parents have more time to help with homework and drive to practice.
A study of medical students found that, even as adults, only children continue to enjoy more ambition.
However, one study found this was only true for middle class families. Only children from upper and lower class families were not more ambitious. The authors suggested that middle class parents pushed their kids hardest to succeed. For these families, one child meant more attention to success.
Well adjusted
Only children perform better on tests of personal adjustment. Personal adjustment is how well children are able to regulate their emotions. The idea is that these kids do not have to compete with siblings for their parent’s affection. This warmth creates more emotional stability for the child.
A separate study supports this idea: only children report more positive relationships with their parents.
On a similar note, couples with one child report more marital satisfaction. Perhaps there is less conflict in one child families. This may help kids develop healthy emotions.
Another suggestion is that these children simply spend more time interacting with adults. Because of this, they model adult’s emotional maturity.
Independent
Not surprisingly, only children score higher on tests of independence. Two studies of college students came to this conclusion. Further, these children appear more independent than their first-born peers.
Similarly, children without siblings have more confidence. Perhaps all that time spent playing alone leads to a sense of personal ability. Or maybe these kids benefit from not comparing themselves to siblings.
Strong character
Character describes a person’s ability to cooperate and act with maturity. A study combining 115 previous studies found that only children excelled here. They showed especially more character than kids from large families.
Other studies of adults confirm this finding. Only children tend to cooperate and show more character, even when compared to first borns.
These kids spend more time around parents than siblings. This may offer them more practice in acting like an adult.
Intelligent
Only children benefit from higher intelligence. Multiple studies of both children and adults support this finding. Likewise, they score higher on IQ tests than first borns or children from small families.
These kids may get more story time as toddlers. They may get more help from parents. One study found that children without siblings spent more time on homework. They also had better grades than those from large families.
Likewise, studies have found only children to be more creative and versatile.
The myth of only child syndrome
Siblings do not seem to improve personality traits. There is simply no research to support the idea of “only child syndrome.”
Only children are similar to everyone else in these ways:
- narcissism
- selfish behavior
- self-esteem
- social skills
- neuroticism
- depression
- life satisfaction
In many ways, onlies act just like anyone else. But they seem to be especially similar in personality to first borns.
Only child vs. first born personalities
Parents may think a sibling might improve their child’s behavior. In fact, the personalities of only children and first borns aren’t very different.
First borns and children from small families also enjoy higher ambition and intelligence. They have more character and a better relationship with parents.
If anything, only children just display the same traits found in first borns, only stronger. Often, studies compare children without siblings to first borns, middle children, and last borns. These typically find the same trait, such as ambition, in the first born. They simply find a higher level in the only child.
The main difference may be socialization. First borns seem to be more social than those without siblings.
Do only children feel lonely?
Only children enjoy the same number of close friendships. This has been found throughout childhood and adulthood. Likewise, studies find they have the same level of social skills and ability to cooperate, and are no less extroverted.
However, those without siblings may be slightly less popular in early childhood. In elementary school, these children were less liked by classmates. Never-the-less, they enjoyed the same number of friends and the same level of friendship quality as other kids. First-borns did not suffer this fate. Probably all the time struggling with siblings gives children from larger families a social edge.
Luckily, by adolescence, these kids catch up. In a large study of 13,500 kids at 10 high schools, teens were asked to name 10 friends. Only children were just as popular as other teens. Most kids spend eight hours a day at school and enjoy extracurricular activities and friendships. This may have a normalizing effect.
As it turns out, the personality traits of only children, like independence and character, may benefit them as teenagers in social environments. In one study, 39% of teenage onlies reported an episode of alcohol intoxication, versus 69% of first borns. In another study, teens with siblings reported being bullied 50% more often at school than onlies.
Do they feel lonely as adults?
As adults, only children report fewer friends overall, but a similar number of close friendships. Likewise, they spend a similar amount of time socializing with friends, neighbors, and coworkers. Perhaps they seek out companionship that is more meaningful and spend more time with fewer individuals.
They do not suffer in old age, either. The morale of elderly people who had frequent interaction with siblings did not differ from those who had no interaction with siblings at all. Previous research compared time spent with friends to time spent with family in old age. They found that only time with friends increases one’s life satisfaction.
Do they suffer from depression?
As children and teenagers, only children may actually be happier without siblings. One large study found that having younger siblings reduced life satisfaction in kids and teens. Another found that teenagers with siblings were twice as likely to suffer from depression. Researchers attributed this to the fact that teens with siblings did not confide in parents as often.
As adults, studies find time and again that adult only children enjoy the same happiness and life satisfaction as everyone else. They do not suffer from more depression, anxiety, or neurotic disorder than those with siblings.
The one child family
Not surprisingly, only children report a more positive relationship with parents. This is true in childhood as well as in adulthood. They even have better relationships with their parents than first borns. These kids also receive individual attention from parents as an infant.
However this does not necessarily translate to more time spent with parents as an adult. Actually, they spend 20% less time with relatives than those with siblings. Naturally, they aren’t spending time with brothers and sisters, nieces and nephews. This amounts to less time spent with family, overall.
Only children as adults
As teenagers, only children were more likely to plan on going to college than those with siblings. This was despite not performing any better academically in high school. Something about the high ambition of these kids seems to fuel their college dreams.
As adults, they tend to reach higher education levels. Likewise, they achieve higher status in their occupations. The combination of having higher ambition, intelligence and other positive personality traits leads to better outcomes in the workplace.
Also, only children don’t have to compete with siblings for parent’s funds. Each sibling reduces the odds by 6% that parents will choose to send a child to private school. Likewise, siblings reduce the amount saved per child for college tuition after controlling for parents’ income.
This means that only children are more likely to be equipped with both financial support and personality traits to help them gain career success.
How they deal with aging parents
Surprisingly, only children do not spend more time caring for aging parents. In a large study, they spent the same number of hours per week caring for sick parents as those with siblings. Similarly, they did not report more stress or burden resulting from their older parents.
The results seem to imply that parents with more children receive more total hours of care. Only children do not seem to feel obligated to spend more time caring for parents, in order to compensate for a lack of siblings. Perhaps, they simply can’t, due to other responsibilities, like career or family. So, siblings may not reduce the burden of having sick parents. However, sick parents may receive less family care with fewer children.
The surprising downside: obesity
Being an only child appears to increase one’s risk of obesity. This has been shown in numerous studies, from the US, Europe, Australia, Japan, China and Brazil. Time and again, the rate of obesity in childhood is found to be roughly 40% higher for onlies. By young adulthood, the risk is 76% higher for those without siblings.
But the cause does not appear to be lack of exercise. Male onlies watch slightly more TV per day (24 minutes), and female onlies get slightly less physical activity (17 minutes). However, the main culprit appears to be parenting styles.
When researchers accounted for how parents disciplined their kids’ food choices, the effects of siblings on obesity was eliminated. Some parents made negative comments about their child’s food. Other parents forbid their child from eating certain things. Both habits actually increased a child’s risk of obesity. On the other hand, praising a child for making good eating choices reduced the risk.
For some reason, parents with one child were more likely to criticize and less likely to praise food choices. Perhaps having a larger family reduces the time and energy parents have to obsess over kids’ eating habits. With lowered expectations, parents might become more likely to praise.
The percentage of small families is increasing
In 1960, the average American family included four children. Today, two children is typical. However, the one-child family is the fastest growing segment. It has doubled in the past twenty years. Today, 20% to 30% of American families have one child.
Small families are even more common in metropolitan areas. 30% of families in Manhattan only have one child. In Seattle, a whopping 47% are one-child families.
Other countries have higher rates of small families than the US. In Canada, 43% of families have one child, and in England, the figure is closer to 46%.
Is life better for an only child?
These children benefit from higher levels of success in adulthood. They even report being happier during childhood. Their personalities differ slightly from other people but in mostly positive ways.
They share a similar number of close friends as others. Likewise, they spend a similar amount of time socializing. They are no more likely to be depressed. However, they are more likely to be overweight.
Overall, the life of the only child seems rewarding and enjoyable. This is fortunate, because they are becoming more common across the world.
I’d love to hear what you think about the lives of only children! Let’s chat in the comments.
See also: Only child benefits – show me the research!
Sources:
Only children score higher on achievement motivation and personal adjustment
As adults, only children are more ambitious, confident, intelligent and independent
Only children surpass first borns in character and positive relationship with parents
Only children feel just as happy and popular and have similar self-esteem
Only children are not more selfish or lacking in social skills
Only children have higher IQ
Only children more likely to excel in education, occupation as adults
Only children are less liked by classmates
Siblings decrease happiness in childhood and adolescence
Only children do not spend more hours caring for aging parents
Only children have 76% higher risk of obesity in young adulthood
Only children have higher risk of obesity because of parenting styles
Should I have a second child? Show me the research!
Most only children I’ve known are big babies. The myth of only children is no myth in my experience. Most are very used to having their way and fall apart when they’re told no and are hard to be around. They are not independent at all. They expect people to take care of them just like their parents always did. In general only children more closely resemble the youngest child in the family not the oldest with the exception of onlies are more success driven. They are happy as kids but as adults are usually malcontents because they are not given special treatment like they expect.
Thanks for leaving a comment! Love the conversation. I don’t have a close relationship with many only children, but am curious to hear other’s first-hand accounts!
Thank you for this thorough article. It is very helpful for me as a mom of a four year old only child. As a person who has an older sibling and a husband who is one of three, we are confident in our decision to have one for many personal reasons. But unfortunately stereotypes and societal pressures make people (us included) that we are making the wrong choice. I am also in education and had very similar stereotypes prior to going thru the parenting experience myself. But the adult only child that I have come across in my life are now some of my best friends and don’t exhibit any “malcontent” behavior as previously mentioned. Maybe with the right parenting those malcontented people wouldn’t haven’t exhibited those behaviors or furthermore those “big baby” only children just needed more equipped parents. In my many years of education I’ve come across many children who are “big babies” that come from families of 2, 3, or even 4. I am curious if that first commentator has any children of their own? Just some food for thought..thanks again for a great article
Thanks for commenting! That would be an interesting area to research – how different parenting styles encourage different personality types! I have looked into “helicopter parenting” and it does seem to produce anxious children, which might be seen as “babies”. Helicopter parenting seems much easier with an only child!
https://researchaddict.com/helicopter-parent/
I’m an only child and know a few. Have to disagree with most of what you have said, a little harsh actually. I have an extremely close relationship with my parents but the world doesn’t end when I don’t get my way. Maybe you’re reading into them based on the sterotypes.
It’s generous of you to express your opinion, but it does seem contrary to the research done on the topic. There’s probably no way to convince you of the validity of the research, but it does seem as though you might want to give the subject, and especially your views, some further analysis.
Well said.
Is there any research on only children of only children? I’m the only one I know of. Are there others like me? If so, how many?
I think this is confirmation bias. When someone is a malcontent as you describe it, you will start looking for a reason why they are like that. When that person is an only child you (subconsciously) go: “See, that’s why they are like that.” While if that person has siblings you go: “Ah, so that can’t be the reason”.
You interpret the facts in a way to verify your own prejudices. That’s ok, everyone does that, but be aware of it.
In reality, a lot of people are malcontents. Some of them are onlies, a relative equal amount is not.
Apart from the above, ‘Most … I’ve known are …’ is anecdotal evidence at best. The statistics tell a different story.
Really well said! @Peter
I am 56 and an only child.My experience definitely contradicts your opinion as I always had to deal with the comment, I bet you’re spoilt. This made me more determined not to be! I have always been very independent and got my first job at 15 just so that my parents didn’t have to fund me.It made me feel good and also tough and strong.I definitely wanted siblings though and feel that I would probably have been less shy and anxious if I had had them growing up.
Allison Holmes – I’ve met some very needy, unstable characters in my 50 years of life all of them have siblings. I’d also like to point out most of the prolific rapists and murderers in the world are from families with siblings. Is there anything else you wish to add?
Ok I was born an only child both my parents are only children. No aunts uncles first cousins, I hated it big time, still do 60 odd years down the track. I did nothing special although I believe I am a good carer & a good communicator. I definitely am not a big baby. I was not spoilt, my dad may be described as such not my mother.
I wonder if these stereotypes continue because of confirmation biase. I guess if we meet someone who is “spoilt” and not an only child we don’t give it a second thought whereas if we meet an only child who confirms the stereotype we remember it.
Exactly what I am thinking, as stated in my response to Allison Holmes.
So interesting that after all that information and research given in the article, the FIRST comment jumps in to the stereotype straight away purely out of ‘personal experience’.
We are currently considering to only have one child and from all the studies I’ve read about their upbringing, lifestyle, opportunities and personally – added with the effects of global warming – I see allot of benefits for my sun.
I also had a think how I’ve seen this play out in people I know who are only child’s. I knew one growing up and I have to say he was the most kind, mature, friendly and intelligent kid of them all. His character really stood out. I met him again recently and he was still like that. Then my current friend and ‘boss’ , she is without a doubt the most generous, sensative, in-touch and also most successful human I’ve ever met. A very unique combination I believe!
Have I ever met any spoilt “big babies” as the person suggests above. Yes! But many of them also had siblings! I think you are simply attributing their behaviour to the one stereotypically “obvious” characteristic without further inspection.
I am not sure yet wether we will have a second. But I’m trying to make the best choice for my sun and the environment. So far I’ve only been able to come up with good reasons for a second for mine and my partners PERSONAL reasons… we shall see….
Yes, such a difficult decision! I also wonder how much spacing matters, for example two years versus seven years between children.
I disagree with many articles that an only child is ok being alone. For me the opposite has happened. I hate being alone. I was alone my whole life. I don’t want to be alone anymore. So, I am one who always wants to be in a relationship because alone sucks, like it sucked in childhood. That need for companionship comes across as desperation and pushes away potential partners. I end up coming across like I want too much too soon.
I am and “Adult Only Child”. I found this article to be quite interesting especially the portion regarding obesity. I struggled with my weight as a child and I remember food feeling like a comfort to me. My Mother was quite critical of me and food was always very soothing.
Growing up I was quite ambitious; but, always felt like I had to perform well. It was overwhelming being someone’s “everything”.
I also remember having a keen awareness of death as a young child; because, I knew if something happened to my parents, I’d be alone.
My parents are great people but I absolutely wish I had a sibling. Seeing my parents age weighs on my heart quite a bit.
Just wondering if you have a reference list for these “findings”? Or are they based on other peoples opinions?
I am an only child and while I had many friends throughout my childhood, I lived about a 30 minute drive from town and had no kids who lived around our rural home. I did feel lonely often. Also, growing up and seeing sibling relationships, I have felt sad like I was missing something. And lastly, and this is the biggest, when my dad got sick and I had to move him into a nursing home (while living in a different state 3000 miles away) I felt the burden of being an only child. No other sibling to share the burden of helping to take care of my aging parent.
I feel frustrated by all of these articles out there on the web about different issues that speak of “statistics” but don’t cite them or offer any proof.
well, after taking a second look, I do now see the sources. I still don’t agree with the statements, though!
Hi, Christen!
So, I have another post with every study I could find on this subject, organized by relevant topic and cut and pasted in abstract format.
https://researchaddict.com/only-child-benefits-research/
But I agree, there is so much left to be studied! I’d love to see a comparison of female vs male only children… I wonder if females are more negatively affected.
Also, I’d like to see more specific studies, rather than general associations regarding life satisfaction, depression, etc. Seems possible to me that siblings could have a minor influence without impacting overall life satisfaction.
Christian, it feels like your experiences may be more down to geography than being an only?
I found this article very interesting. I’ve always been enamored with the only child which is why I chose to only have one myself. He’s now 19 and, from my experience, everything in this article is entirely spot on both in regards to the child and the parenting… except luckily he has always been slim. I’ve sometimes had guilt over not giving him the sibling experience but actually believe he’s gained much more by being an only.
Thank-you for this research in such a digestible form. As an only child with an only child, this fits with everything I already knew, but society so often tells us otherwise. But most importantly, everyone should have whatever family works for them. That’s the most important thing. Thanks again
Is there any research on only children of only children? I’m the only one I know of. Are there others like me? If so, how many?
This is interesting, I was an only child for 10 years before I had siblings. Due to being an only child I had high levels of anxiety and was extremely shy. My parents ‘shield’ me from everything and it was tough growing up. I got bullied a lot and didn’t know how to defend myself. Once my siblings were born i felt the responsibility to be there for them and guide them through their early years. Here we are 21 years later and all three of us have an amazing relationship. In my case, I disliked being an only child. Now I’m struggling to decide if I want my only child to have a sibling..
Are you sure that your anxiety and shyness was due to being an only child? Might it not be that being shielded from everything by your parents and being bullied gave rise to it? Although I do hear that your siblings changed your life in a positive way!
I think some experiences would lead to anxiety in most people, only child or not. I have an older sister and I had a similar experience to you with being both curled and bullied. We are close in age and being tweens/teens at the same time was actually quite hard. She often told me there must be something wrong with me for not having many friends, which made me feel even worse. For me, self-development and connecting with new people was the reason I changed to being secure and extraverted. (Today, I have a friendly but not close relationship to my sister).
That said, I believe the presence and quality of social relationships is very important, and siblings can create an opportunity for that. However, at the same time, sibling relationships can be detrimental and there is no way of getting away while you still live at home. Thus, it would be VERY interesting to study subgroups! I.e. does closeness to siblings affect the variables mentioned? I would imagine there’s quite a regression to the mean in the siblings group, possibly hiding great variability, as some have terrible relationships and some have great ones.
I also think parenting style is extremely important. It might also affect sibling closeness. I can imagine that some of the positive effects of being an only child or a firstborn are mainly due to the parents having more time to parent consciously and less stress overall. As someone mentioned, it would be interesting to look for differences depending on the age gap between siblings.
Mostly agreed with this article. Almost all only child I know, including ours, are high achievers. However, they can also be prone to stress as they tend to be “people pleasers”. It might be stemmed from
their subconscious efforts for not disappointing their parents. Most of them don’t like to be on the center stage. Some confided in me that they already feel constantly under the spotlight by their own parents. They are usually hard workers who focused on achieving their goals. As for achieving success, they are normally more humble. They know that all their achievements big or small will get all the deserving praise from her/his parents and from those they care about without them having to brag about it.