Curious Kids: what are the main factors in forming someone’s personality?
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“What are the main factors in forming someone’s personality?” – Emma, age 10, from Shanghai
Hello Emma, and thank you for this very interesting question!
Let’s start by exploring what we mean by personality. Have you noticed no two people are completely alike? We all see, experience, and understand the world in different ways.
For example, some people love spending time with friends and being the centre of attention, whereas other people are more shy and enjoy having time to themselves.
Your unique personality is shaped by your genes as well as various influences in your environment. And your personality plays an important role in how you interact with the world.
The big five
Did you know there are scientists who spend time researching personality? Their research is concerned with describing the ways people differ from each other, and understanding how these differences could be important for other parts of life such as our health and how well we do in school or at work.
There are many different perspectives on personality. A widely accepted viewpoint based on a lot of research is called the five factor model or the “big five”. According to this theory, a great deal of a person’s personality can be summarised in terms of where they sit on five dimensions, called traits:
- the introversion-extraversion trait refers to how much someone is outgoing and social (extroverted) or prefers being with smaller groups of friends or focusing on their own thoughts (introverted)
- agreeableness captures how much someone tends to be cooperative and helps others
- openness to experience refers to how much a person is creative and enjoys experiencing new things
- neuroticism describes a person’s tendency to experience negative feelings, like worrying about things that could go wrong
- conscientiousness encompasses how much a person is organised, responsible, and dedicated to things that are important to them, like schoolwork or training for a sports team.
A person can have high, low, or moderate levels of each of these traits. And understanding whether someone has higher or lower levels of the big five can tell us a lot about how we might expect them to behave in different situations.
So what shapes our personalities?
A number of factors shape our personalities, including our genes and social environment.
Our bodies are made up of many very small structures called cells. Within these cells are genes. We inherit genes from our parents, and they carry the information needed to make our bodies and personalities. So, your personality may be a bit like your parents’ personalities. For example, if you’re an outgoing sort of person who loves to meet new people, perhaps one or both of your parents are very social too.
KieferPix/Shutterstock
Personalities are also affected by our environment, such as our experiences and our relationships with family and friends. For example, some research has shown our relationships with our parents can influence our personality. If we have loving and warm relationships, we may be more agreeable and open. But if our relationships are hurtful or stressful, this may increase our neuroticism.
Another study showed that, over time, young children who were more physically active were less introverted (less shy) and less likely to get very upset when things don’t go their way, compared to children who were less physically active. Although we don’t know why this is for sure, one possible explanation is that playing sport leads to reduced shyness because it introduces children to different people.
While we’re learning more about personality development all the time, research in this area presents quite a few challenges. Many different biological, cultural and environmental influences shape our development, and these factors can interact with each other in complex ways.
Is our personality fixed once we become adults?
Although we develop most of our personality when we are young, and people’s personalities tend to become more stable as they get older, it is possible for aspects of a person’s personality to change, even when they are fully grown.
A good example of this can be seen among people who seek treatment for conditions like anxiety or depression. People who respond well to working with a psychologist can show decreases in neuroticism, indicating they become less likely to worry a lot or feel strong negative feelings when something stressful happens.
Hello, Curious Kids! Do you have a question you’d like an expert to answer? Ask an adult to send your question to mailto:curiouskids@theconversation.edu.au
Tim Windsor, Professor, Director, Generations Research Initiative, College of Education, Psychology and Social Work, Flinders University and Natalie Goulter, Lecturer, College of Education, Psychology and Social Work, Flinders University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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5 Ways To Beat Afternoon Energy Slumps
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This is Nisha Vora, of Rainbow Plant Life fame. After graduating from Harvard Law School, she realized she hated being a lawyer, and pivoted completely to become what she now is 12 years later, a chef and health coach.
Here are her tips for boosting energy through the day:
Caffeine timing
If you don’t do caffeine at all, no need to change that, but if you do, Vora advises that midday is the best time for it, with a very good rationale:
- of course it should not be too late in the day, because the elimination half-life of caffeine (4–8 hours to eliminate just half of the caffeine, depending on genes, call it 6 hours as an average though honestly for most people it will either be 4 or 8, not 6) is such that it can easily interfere with sleep for most people
- because caffeine is an adenosine blocker, not an adenosine inhibitor, taking caffeine in the morning means either there’s no adenosine to block, or it’ll just “save” that adenosine for later, i.e. when the caffeine is eliminated, then the adenosine will kick in, meaning that your morning sleepiness has now been deferred to the afternoon, rather than eliminated.
Another reminder that caffeine is the “payday loan” of energy. So, midday it is. No morning sleepiness to defer, and yet also not so late as to interfere with sleep.
See also: Calculate (And Enjoy) The Perfect Night’s Sleep
Simplify what can be simplified
This one’s not from a physiological basis, but rather, that a lot of the time most of us have much of our energy being taken by constant task-switching (what gets called multitasking, but as our brain is a single processor, it really means switching rapidly between different kinds of cognition, which is not efficient). In order to avoid that energy drain, try to streamline things and make a particular effort to not only single-task, but to do so without distractions.
Counterpoint: if you have unmedicated ADHD, then chances are you’ll do better with a single small distraction chosen by you, than trying to go without distractions, because your brain will find distractions anyway, so you might as well choose one (for many people it is background music, or a podcast or TV show that one doesn’t may attention to but it’s there) as a matter of harm reduction, and that way you’ll do better at focusing on your primary task than if your brain were reaching out for every and any possible distraction.
Manage your blood sugars
In particular, she advocates for avoiding sugary breakfasts, opting instead for protein, fat, and fiber-rich options. For more in this regard, see:
10 Ways To Balance Your Blood Sugars
Walk after meals
You don’t have to don hiking boots and “I am just going outside and may be some time“; rather, even a 2–5 minute walk after a meal helps regulate digestion and glucose levels, avoiding postprandial energy slumps.
So,
- if you have a treadmill, after eating is a great time to use it for a few minutes
- if you have stairs, now’s a great time to go up and down them a few times
One last technique for when everything else fails
We’ll quote her directly on this one:
❝Despite my best efforts, soemtimes I just have one of those days. Maybe I didn’t sleep well or I’m distracted by my never ending thoughts. If I need to be productive or energized on those days, I will do something that I absolutely hate:
I will take a cold shower.
And I hate it because I’m already always cold all the time, so why would I want to get a cold shower?
Well, it’s because cold water immersion has been shown to dramatically boost your dopamine levels, which gives you more energy and motivation.
In the moment though, it’s mostly painful and I hate everything and everyone around me.
But I know that if I can suffer through two minutes of a cold shower, I will feel so refreshed.❞
There are more benefits than just that, though, see:
A Cold Shower A Day Keeps The Doctor Away?
Want more from Nisha Vora?
We reviewed one of her books a while back:
The Vegan Instant Pot Cookbook – by Nisha Vora
Enjoy!
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The SharpBrains Guide to Brain Fitness – by Alvaro Fernandez et al.
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We say “et al.” in the by-line, because this one has a flock of authors, including Dr. Pascale Michelon, Dr. Sandra Bond Chapman, Dr. Elkehon Goldberg, and various others if we include the foreword, introduction, etc.
This is relevant, because those who contributed to the meat of the book (i.e., those listed above), it makes the work a lot more scientifically reliable; one skilled science writer might make a mistake; it’s much less likely to make it through to publication when there are a bevy of doctors in the mix, each staking their reputation on the book’s content, and thus having a vested interest in checking each other’s work as well as their own.
As for what this multidisciplinary team have to offer? The book covers such things as:
- how the brain works (especially the possibilities of neuroplasticity), and what that means for such things as memory and attention
- being “a coach not a patient”; i.e., being active rather than passive in one’s approach to brain health
- the relevance of physical exercise, how much, and what kind
- the relevance (and limitations) of diet choices for brain health
- the relevance of such things as learning new languages and musical training
- the relevance of social engagement, and how some (but not all) social engagement can boost cognition
- methods for managing stress and building resilience to same (critical for maintaining a healthy brain)
- “cross-fit for your brain”, that is to say, a multi-vector collection of tools to explore, ranging from meditation to CBT to biofeedback and more.
The style is pop-science without being sensationalist, just communicating ideas clearly, with enough padding to feel casual, and not like a dense read. Importantly, it’s also practical and applicable too, which is something we always look for here.
Bottom line: if you’d like to be given a good overview of what things work (and how much they can be expected to work), along with a good framework to put that knowledge into practice, then this is a great book for you.
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Blood-Sugar Balancing Beetroot Cutlets
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These beetroot cutlets are meaty and proteinous and fibrous and even have a healthy collection of fats, making these much better for your heart and blood than an animal-based equivalent.
You will need
- 1 can kidney beans, drained and rinsed (or 1 cup same, cooked, drained, and rinsed)
- ½ cup chopped roasted or steamed beetroot, blotted dry
- ½ cup chopped walnuts (if allergic, substitute with ¼ cup pumpkin seeds)
- ½ cup cooked (ideally: mixed) grains of your choice (if you need gluten-free, there are plenty of gluten-free grains and pseudocereals)
- ¼ cup finely chopped onion
- ¼ bulb garlic, minced or crushed
- 2 tbsp nutritional yeast
- 2 tbsp ground flaxseeds
- 2 tbsp ground chia seeds
- 2 tsp tomato purée
- 1 tsp black pepper
- ½ tsp white miso paste
- ½ tsp smoked paprika
- ½ tsp cayenne pepper
- ¼ tsp MSG or ½ tsp low-sodium salt
Method
(we suggest you read everything at least once before doing anything)
1) Combine the beetroot, beans, walnuts, grains, and onion in a food processor, and process until a coarse even mixture.
2) Add the remaining ingredients and process to mix thoroughly.
3) Transfer the mixture to a clean work surface and divide into six balls. If the structural integrity is not good (i.e. too soft), add a little more of any or all of these ingredients: chopped walnuts, ground flax, ground chia, nutritional yeast.
4) Press the balls firmly into cutlets, and refrigerate for at least 1 hour, but longer is even better if you have the time. Alternatively, if you’d like to freeze them for later use, then this is the point at which to do that.
5) Preheat the oven to 375℉ / 190℃.
6) Roast the cutlets on a baking tray lined with baking paper, for about 30 minutes, turning over carefully with a spatula halfway through. They should be firm when done; if they’re not, give them a little longer.
7) Serve hot, for example on a bed of greens and with a drizzle of aged balsamic vinegar.
Enjoy!
Want to learn more?
For those interested in some of the science of what we have going on today:
- Beetroot’s Many Benefits
- Our Top 5 Spices: How Much Is Enough For Benefits?
- What Omega-3 Fatty Acids Really Do For Us
- Three Daily Servings of Beans?
- If You’re Not Taking Chia, You’re Missing Out
Take care!
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Genetic Risk Factors For Long COVID
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Some people, after getting COVID, go on to have Long COVID. There are various contributing factors to this, including:
- Lifestyle factors that impact general disease-proneness
- Immune-specific factors such as being immunocompromised already
- Genetic factors
We looked at some modifiable factors to improve one’s disease-resistance, yesterday:
And we’ve taken a more big-picture look previously:
Beyond Supplements: The Real Immune-Boosters!
Along with some more systemic issues:
Why Some People Get Sick More (And How To Not Be One Of Them)
But, for when the “don’t get COVID” ship has sailed, one of the big remaining deciding factors with regard to whether one gets Long COVID or not, is genetic
The Long COVID Genes
For those with their 23andMe genetic data to hand…
❝Study findings revealed that three specific genetic loci, HLA-DQA1–HLA-DQB1, ABO, and BPTF–KPAN2–C17orf58, and three phenotypes were at significantly heightened risk, highlighting high-priority populations for interventions against this poorly understood disease.❞
For those who don’t, then first: you might consider getting that! Here’s why:
Genetic Testing: Health Benefits & Methods
But also, all is not lost meanwhile:
The same study also found that individuals with genetic predispositions to chronic fatigue, depression, and fibromyalgia, as well as other phenotypes such as autoimmune conditions and cardiometabolic conditions, are at significantly higher risk of long-COVID than individuals without these conditions.
Good news, bad news
Another finding was that women and non-smokers were more likely to get Long COVID, than men and smokers, respectively.
Does that mean that those things are protective against Long COVID, which would be very counterintuitive in the case of smoking?
Well, yes and no; it depends on whether you count “less likely to get Long COVID because of being more likely to just die” as protective against Long COVID.
(Incidentally, estrogen is moderately immune-enhancing, while testosterone is moderately immune-suppressing, so the sex thing was not too surprising. It’s also at least contributory to why women get more autoimmune disorders, while men get more respiratory infections such as colds and the like)
Want to know more?
You can read the paper itself, here:
*GWAS = Genome-Wide Association Study
Take care!
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To Err Is Human; To Forgive, Healthy
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How To Forgive (And Why)
There’s an old saying that holding onto a grudge is like drinking poison and expecting the other person to die. If only it were so simple and easy as just choosing to let go!
But it’s not, is it?
When people have wronged us and/or wronged our loved ones, it’s hard to forgive, especially if they have not changed. For that matter, it can be hard to forgive ourselves for mistakes that we made, too.
Either way, “drinking that poison” can be close to literal, in terms of what harboring such anger and resentment can do for our cortisol levels.
So, what to do about it?
If you have a dialogue with the person, our previous article on communication may help a lot.
If you don’t, there are various other angles that can be taken:
The Unsent Letter
You can even send it, if you like, but it’s not the point here. The idea is to write to the person, expressing your grievances. But, (as per the above-linked article on communication) try to focus at least as much on your feelings as their actions. “When you did/said x, I felt y”, etc.
This is important for helping you process your feelings. If you send the letter, it’s also important for the other person to be able to understand your feelings.
Sometimes, we feel the things we do so strongly because we don’t have an outlet for them. Pouring out our emotions in such a fashion, on the other hand, means (to labor the metaphor) they’re no longer bottled up. Even just in and of itself, that can provide us a lot of relief.
And when we the negative emotions are no longer such high pressure, it can be easier to let go of them.
Mindfulness
Following on from the above idea, a good strategy can be simply sitting and feeling everything you need to feel, noticing it without judgement, like a curious observer.
Sometimes what we need is just to be heard, and that starts with hearing ourselves.
Compassion
There’s a Buddhist exercise that involves actively feeling compassion for three people: a loved one, a stranger, and an enemy. Many people report that it’s actually harder to feel compassion for a random stranger, than an enemy. Why? Because we don’t know them; we don’t know what’s good and bad about them in our estimation.
If you’re reading this because you want to be able to gain the peace of being able to forgive someone (even if that someone is yourself), then in at least some respect right now, that person is in the “enemy” category. So how do we unpack that?
To err is human. Everybody screws up sometimes. And also, everyone has a reason (or a complex of reasons) for acting the way they do. This does not mean that those reasons excuse the behavior, but it can explain it.
You don’t get angry at a storm for soaking you through. Even if you might not understand the physics of it in the way a meteorologist might, you understand that there were things that led to that, and you were just in the wrong place at the wrong time.
So why do we get angry at someone else for wronging us? Even if we might not understand the personal background of it in the way their psychologist or therapist might, we (hopefully) understand that there were things that caused them to be the way they were, and we were just in the wrong place at the wrong time.
And ourselves? We probably know, when we made a mistake, why we made it. Maybe we were afraid, insecure, reactive, forgetful, or too focused on some other thing. Whatever it was, we did our best at the time and, apparently, our best wasn’t as good as we’d like.
If we didn’t deserve forgiveness, we wouldn’t be critical of our past selves in the first place.
And, the science is very clear that it’s important for our health for other reasons besides cortisol management, too.
And as for others? They did the best they knew how. Maybe they were afraid, insecure, reactive, forgetful, or too focused on some other thing. Same story, different character.
Remembering that can be key to “accepting the apology we never received”.
Forgiving without forgetting
Developing the ability to forgive is a useful tool for our own mental health. It doesn’t mean we must or even should make ourselves a doormat.
“I forgive you” does not have to mean a clean slate; it means remembering that the thing happened, and just not holding on to the anger/resentment associated with it.
It may be water under the bridge now, but it might have been a devastatingly destructive wave at the time, and continuing to acknowledge truth that is sensible. Just, from a position of peace now, hopefully.
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Microplastics found in artery plaque linked with higher risk of heart attack, stroke and death
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Microplastics and nanoplastics are everywhere in our environment – including in our oceans and lakes, farmland, and even Arctic ice algae.
Microplastics have also been found inside of us – with studies detecting them in various tissues including in the lungs, blood, heart and placenta. Understandably, concern is rising about the potential risks of microplastics on our health.
However, while a growing body of research has focused on microplastics and nanoplastics, there’s still a lack of direct evidence that their presence in human tissues is harmful to our health – and it’s uncertain if they are related to particular diseases.
A new study has uncovered a correlation between microplastics and heart health, though. The researchers found that people who had detectable microplastics and nanoplastics in the plaque in their arteries had a higher risk of heart attack, stroke and death.
Heart health
The researchers looked at 257 people altogether. All of the patients were already undergoing preventative surgery to remove plaque from their carotid arteries (the main arteries that supply the brain with blood). This allowed the researchers to collect plaque samples and perform a chemical analysis. They then followed up with participants 34 months later.
Of the 257 participants, 150 were found to have the presence of microplastics and nanoplastics in their arterial plaque – mainly fragments of two of the most commonly used plastics in the world, polyethylene (used in grocery bags, bottles and food packaging) and polyvinyl chloride (used in flooring, cladding and pipes).
A statistical analysis of this data found that patients with microplastics and nanoplastics in their plaque had a higher risk of suffering a heart attack, stroke or death from any cause, compared with those who had no microplastics or nanoplastics in their plaque.
The researchers also analysed the macrophages (a type of immune cell that helps remove pathogens from the body) in the patients’ arteries. They found that participants who’d had microplastics and nanoplastics in their plaque also had evidence of plastic fragments in their macrophages.
They also looked at whether certain genes associated with inflammation (which can be a sign of disease) were switched on in the participants. They found that the participants who’d had microplastics and nanoplastics in their plaque also had signs of inflammation in their genes.
The microplastics were found in samples of plaque extracted from the carotid artery. Rocos/ Shutterstock These results may suggest an accumulation of nanoplastics and microplastics in carotid plaque could partly trigger inflammation. This inflammation may subsequently change the way plaque behaves in the body, making it less stable and triggering it to form a blood clot – which can eventually block blood flow, leading to heart attacks and strokes.
Interestingly, the researchers also found the presence of nanoplastics and microplastics was more common in participants who had diabetes and cardiovascular disease. This raises a lot of questions which have yet to be answered – such as why microplastics were more common in these participants, and if there may be a correlation between other diseases and the presence of microplastics in the body.
Other health risks
This study only focused on patients who had carotid artery disease and were already having surgery to remove the build-up of plaque. As such, it’s unclear whether the findings of this study can be applied to a larger population of people.
However, it isn’t the first study to show a link between microplastics and nanoplastics with poor health. Research suggests some of this harm may be due to the way microplastics and nanoplastics interact with proteins in the body.
For example, some human proteins adhere to the surface of polystyrene nanoplastics, forming a layer surrounding the nanoparticle. The formation of this layer may influence the activity and transfer of nanoplastics in human organs.
Another study suggested that nanoplastics can interact with a protein called alpha-synuclein, which in mouse studies has been shown to play a crucial role in facilitating communication between nerve cells. These clumps of nanoplastics and protein may increase the risk of Parkinson’s disease.
My published PhD research in chicken embryos found that nanoplastics may cause congenital malformations due to the way they interact with a protein called cadherin6B. Based on the interactions myself and fellow researchers saw, these malformations may affect the embryo’s eyes and neural tube, as well as the heart’s development and function.
Given the fact that nanoplastics and microplastics are found in carotid plaque, we now need to investigate how these plastics got into such tissues.
In mice, it has been demonstrated that gut macrophages (a type of white blood cell) can absorb microplastics and nanoplastics into their cell membrane. Perhaps a similar mechanism is taking place in the arteries, since nanoplastics have been identified in samples of carotid plaque macrophages.
The findings from this latest study add to a growing body of evidence showing a link between plastic products and our health. It is important now for researchers to investigate the specific mechanisms by which microplastics and nanoplastics cause harm in the body.
Meiru Wang, Postdoctoral Researcher, Molecular Biology and Nanotoxicology, Leiden University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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