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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Licorice, Digestion, & Hormones
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Let’s Take A Look At Licorice…
Licorice, as a confectionary, is mostly sugar and is useless for medicinal purposes.
Licorice (Glycyrrhiza sp., most often Glycyrrhiza glabra), in the form of either the root extract (which can be taken as a supplement, or used topically) or the whole root (which can be taken as a powder/capsule, or used to make tea), is a medicinal plant with a long history of use.
How well-evidenced is it for its popular uses?
Licorice for digestion
In this case, it is more accurate to say that it combats indigestion, including acid reflux and ulcerative colitis:
Systematic Review on Herbal Preparations for Controlling Visceral Hypersensitivity in Functional Gastrointestinal Disorders ← licorice was a top-tier performer in this review
Network pharmacology mechanisms and experimental verification of licorice in the treatment of ulcerative colitis ← looking at the mechanism of action; ultimately they concluded that “licorice improves ulcerative colitis, which may be related to the activation of the Nrf2/PINK1 signaling pathway that regulates autophagy.“
Licorice vs menopause symptoms
This one, while a popular use, isn’t so clear. Here’s a study that examines the compounds in licorice (in this case, Glycyrrhiza uralensis) that interact with estrogen receptors, notes that the bioavailability is poor, and proposes, tests, and recommends a way to make it more bioavailable:
On the other hand, it is established that it will lower serum testosterone levels, which may make it beneficial for menopause and/or PCOS:
Polycystic ovaries and herbal remedies: A systematic review
Licorice for men
You may be wondering: what about for men? Well, the jury is out on whether it meaningfully reduces free testosterone levels:
Licorice consumption and serum testosterone in healthy men
See also:
And finally, it may (notwithstanding its disputed effect on testosterone itself) be useful as a safer alternative to finasteride (an antiandrogen mostly commonly used to treat benign prostatic hyperplasia, also used to as a hair loss remedy), since it (like finasteride) modulates 5α-reductase activity (this enzyme converts testosterone to the more potent dihydrogen testosterone, DHT), without lowering sperm count:
Licorice for the skin
As well as its potentially estrogenic activity, its anti-inflammatory and antioxidant powers make it comparable to hydrocortisone cream for treating eczema, psoriasis, and other such skin conditions:
New Herbal Biomedicines for the Topical Treatment of Dermatological Disorders
Is it safe?
It is “generally recognized as safe”, as the classification goes.
However, consumed in excess it can cause/worsen hypertension, and other contraindications include if you’re on blood thinners, or have kidney problems.
As ever, this is a non-exhaustive list, so do speak with your doctor/pharmacist to be sure.
Want to try some?
We don’t sell it, but here for your convenience is an example product on Amazon
Enjoy!
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Dopamine Nation – by Dr. Anna Lembke
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We live in an age of abundance, though it often doesn’t feel like it. Some of that is due to artificial scarcity, but a lot of it is due to effectively whiting out our dopamine circuitry through chronic overuse.
Psychiatrist Dr. Anna Lembke explores the neurophysiology of pleasure and pain, and how each can (and does) lead to the other. Is the answer to lead a life of extreme neutrality? Not quite.
Rather, simply by being more mindful of how we seek each (yes, both pleasure and pain), we can leverage our neurophysiology to live a better, healthier life—and break/avoid compulsive habits, while we’re at it.
That said, the book itself is quite compelling reading, but as Dr. Lembke shows us, that certainly doesn’t have to be a bad thing.
Bottom line: if you sometimes find yourself restlessly cycling through the same few apps (or TV channels) looking for dopamine that you’re not going to find there, this is the book for you.
Click here to check out Dopamine Nation, and get a handle on yours!
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New study suggests weight loss drugs like Ozempic could help with knee pain. Here’s why there may be a link
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The drug semaglutide, commonly known by the brand names Ozempic or Wegovy, was originally developed to help people with type 2 diabetes manage their blood sugar levels.
However, researchers have discovered it may help with other health issues, too. Clinical trials show semaglutide can be effective for weight loss, and hundreds of thousands of people around the world are using it for this purpose.
Evidence has also shown the drug can help manage heart failure and chronic kidney disease in people with obesity and type 2 diabetes.
Now, a study published in the New England Journal of Medicine has suggested semaglutide can improve knee pain in people with obesity and osteoarthritis. So what did this study find, and how could semaglutide and osteoarthritis pain be linked?
Pormezz/Shutterstock Osteoarthritis and obesity
Osteoarthritis is a common joint disease, affecting 2.1 million Australians. Most people with osteoarthritis have pain and find it difficult to perform common daily activities such as walking. The knee is the joint most commonly affected by osteoarthritis.
Being overweight or obese is a major risk factor for osteoarthritis in the knee. The link between the two conditions is complex. It involves a combination of increased load on the knee, metabolic factors such as high cholesterol and high blood sugar, and inflammation.
For example, elevated blood sugar levels increase the production of inflammatory molecules in the body, which can damage the cartilage in the knee, and lead to the development of osteoarthritis.
Weight loss is strongly recommended to reduce the pain of knee osteoarthritis in people who are overweight or obese. International and Australian guidelines suggest losing as little as 5% of body weight can help.
But losing weight with just diet and exercise can be difficult for many people. One study from the United Kingdom found the annual probability of people with obesity losing 5% or more of their body weight was less than one in ten.
Semaglutide has recently entered the market as a potential alternative route to weight loss. It comes from a class of drugs known as GLP-1 receptor agonists and works by increasing a person’s sense of fullness.
Semaglutide for osteoarthritis?
The rationale for the recent study was that while we know weight loss alleviates symptoms of knee osteoarthritis, the effect of GLP-1 receptor agonists was yet to be explored. So the researchers set out to understand what effect semaglutide might have on knee osteoarthritis pain, alongside body weight.
They randomly allocated 407 people with obesity and moderate osteoarthritis into one of two groups. One group received semaglutide once a week, while the other group received a placebo. Both groups were treated for 68 weeks and received counselling on diet and physical activity. At the end of the treatment phase, researchers measured changes in knee pain, function, and body weight.
As expected, those taking semaglutide lost more weight than those in the placebo group. People on semaglutide lost around 13% of their body weight on average, while those taking the placebo lost around 3% on average. More than 70% of people in the semaglutide group lost at least 10% of their body weight compared to just over 9% of people in the placebo group.
Osteoarthritis of the knee is the most common type of osteoarthritis. SKT Studio/Shutterstock The study found semaglutide reduced knee pain significantly more than the placebo. Participants who took semaglutide reported an additional 14-point reduction in pain on a 0–100 scale compared to the placebo group.
This is much greater than the pain reduction in another recent study among people with obesity and knee osteoarthritis. This study investigated the effects of a diet and exercise program compared to an attention control (where participants are provided with information about nutrition and physical activity). The results here saw only a 3-point difference between the intervention group and the control group on the same scale.
The amount of pain relief reported in the semaglutide trial is also larger than that reported with commonly used pain medicines such as anti-inflammatories, opioids and antidepressants.
Semaglutide also improved knee function compared to the placebo. For example, people who took semaglutide could walk about 42 meters further than those on the placebo in a six-minute walking test.
How could semaglutide reduce knee pain?
It’s not fully clear how semaglutide helps with knee pain from osteoarthritis. One explanation may be that when a person loses weight, there’s less stress on the joints, which reduces pain.
But recent studies have also suggested semaglutide and other GLP-1 receptor agonists might have anti-inflammatory properties, and could even protect against cartilage wear and tear.
While the results of this new study are promising, it’s too soon to regard semaglutide as a “miracle drug” for knee osteoarthritis. And as this study was funded by the drug company that makes semaglutide, it will be important to have independent studies in the future, to confirm the findings, or not.
The study also had strict criteria, excluding some groups, such as those taking opioids for knee pain. One in seven Australians seeing a GP for their knee osteoarthritis are prescribed opioids. Most participants in the trial were white (61%) and women (82%). This means the study may not fully represent the average person with knee osteoarthritis and obesity.
It’s also important to consider semaglutide can have a range of side effects, including gastrointestinal symptoms and fatigue.
There are some concerns that semaglutide could reduce muscle mass and bone density, though we’re still learning more about this.
Further, it can be difficult to access.
I have knee osteoarthritis, what should I do?
Osteoarthritis is a disease caused by multiple factors, and it’s important to take a multifaceted approach to managing it. Weight loss is an important component for those who are overweight or obese, but so are other aspects of self-management. This might include physical activity, pacing strategies, and other positive lifestyle changes such as improving sleep, healthy eating, and so on.
Giovanni E. Ferreira, NHMRC Emerging Leader Research Fellow, Institute of Musculoskeletal Health, University of Sydney and Christina Abdel Shaheed, Associate Professor, School of Public Health, University of Sydney
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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The Health Fix – by Dr. Ayan Panja
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The book is divided into three main sections:
- The foundations
- The aspirations
- The fixes
The foundations are an overview of the things you’re going to need to know, about biology, behaviors, and being human.
The aspirations are research-generated common hopes, desires, dreams and goals of patients who have come to Dr. Panja for help.
The fixes are exactly what you’d hope them to be. They’re strategies, tools, hacks, tips, tricks, to get you from where you are now to where you want to be, health-wise.
The book is well-structured, with deep-dives, summaries, and practical advice of how to make sure everything you’re doing works together as part of the big picture that you’re building for your health.
All in all, a fantastic catch-all book, whatever your health goals.
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Maximize Your Misery! (7 Great Methods)
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Let’s imagine that instead of being healthily fulfilled in life, you wanted to spend your days as miserable as possible. What should you do?
Here are a few pointers:
Stay still
Avoid physical activity and/or outdoor exposure, to avoid any mood-lifting neurochemicals. In fact, remain indoors as much as possible, preferably in the same room.
If you want to absolutely maximize your misery, make your bedroom the sole space for all activities that it’s possible to do there.
Disrupt your sleep
Keep an irregular sleep schedule by varying your bedtime and wake-up times frequently. Sleep in as much as possible, and make up for it by staying up late to ensure ongoing exhaustion.
Maximize screentime
Use digital entertainment as much as possible to distract you from meaningful activities and rest—as a bonus, this will also help you to avoid self-reflection.
Begin and end your day with a device in hand.
Fuel negative emotions
If you’re going to focus on something, focus on problems you cannot control, to stoke the fires of anger and angst.
A good way of doing this is by staying informed about distressing events, while avoiding meaningful actions to address them. Contribute only in token gestures, and then lament the lack of change.
Follow your impulses
Act on short-term desires without considering long-term consequences, while avoiding behaviors that you know might improve your mood or wellbeing.
Trust that doing the same things that have not previously resulted in happiness, will continue to reliably deliver unhappiness.
Set goals to miss
It’s important that your goals should be vague, and overly ambitious in their scope and/or deliverability. Ideally you should also disregard any preparatory work that a person would normally do before embarking on such a project.
Bonus tip: you can further sabotage any chances of progress, by waiting for motivation to strike before you take any action.
Pursue happiness
Focus on chasing happiness itself, instead of improving your situation or skills. Treat happiness as an end goal, instead of a by-product of worthwhile activities.
Want to learn more?
If you’d like to know many more ways to be miserable, we featured these 7 from this book of 40, which we haven’t reviewed yet, but probably will one of these days:
How to Be Miserable: 40 Strategies You Already Use – by Dr. Randy Paterson
Alternatively…
If for some strange reason you’d rather not do those things, you might consider a previous article of ours:
How To Get Your Brain On A More Positive Track (Without Toxic Positivity)
Enjoy!
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How much does your phone’s blue light really delay your sleep? Relax, it’s just 2.7 minutes
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It’s one of the most pervasive messages about technology and sleep. We’re told bright, blue light from screens prevents us falling asleep easily. We’re told to avoid scrolling on our phones before bedtime or while in bed. We’re sold glasses to help filter out blue light. We put our phones on “night mode” to minimise exposure to blue light.
But what does the science actually tell us about the impact of bright, blue light and sleep? When our group of sleep experts from Sweden, Australia and Israel compared scientific studies that directly tested this, we found the overall impact was close to meaningless. Sleep was disrupted, on average, by less than three minutes.
We showed the message that blue light from screens stops you from falling asleep is essentially a myth, albeit a very convincing one.
Instead, we found a more nuanced picture about technology and sleep.
Mangostar/Shutterstock What we did
We gathered evidence from 73 independent studies with a total of 113,370 participants of all ages examining various factors that connect technology use and sleep.
We did indeed find a link between technology use and sleep, but not necessarily what you’d think.
We found that sometimes technology use can lead to poor sleep and sometimes poor sleep can lead to more technology use. In other words, the relationship between technology and sleep is complex and can go both ways.
How is technology supposed to harm sleep?
Technology is proposed to harm our sleep in a number of ways. But here’s what we found when we looked at the evidence:
- bright screen light – across 11 experimental studies, people who used a bright screen emitting blue light before bedtime fell asleep an average of only 2.7 minutes later. In some studies, people slept better after using a bright screen. When we were invited to write about this evidence further, we showed there is still no meaningful impact of bright screen light on other sleep characteristics including the total amount or quality of sleep
- arousal is a measure of whether people become more alert depending on what they’re doing on their device. Across seven studies, people who engaged in more alerting or “exciting” content (for example, video games) lost an average of only about 3.5 minutes of sleep compared to those who engaged in something less exciting (for example, TV). This tells us the content of technology alone doesn’t affect sleep as much as we think
- we found sleep disruption at night (for example, being awoken by text messages) and sleep displacement (using technology past the time that we could be sleeping) can lead to sleep loss. So while technology use was linked to less sleep in these instances, this was unrelated to being exposed to bright, blue light from screens before bedtime.
Which factors encourage more technology use?
Research we reviewed suggests people tend to use more technology at bedtime for two main reasons:
- to “fill the time” when they’re not yet sleepy. This is common for teenagers, who have a biological shift in their sleep patterns that leads to later sleep times, independent of technology use.
- to calm down negative emotions and thoughts at bedtime, for apparent stress reduction and to provide comfort.
There are also a few things that might make people more vulnerable to using technology late into the night and losing sleep.
We found people who are risk-takers or who lose track of time easily may turn off devices later and sacrifice sleep. Fear of missing out and social pressures can also encourage young people in particular to stay up later on technology.
What helps us use technology sensibly?
Last of all, we looked at protective factors, ones that can help people use technology more sensibly before bed.
The two main things we found that helped were self-control, which helps resist the short-term rewards of clicking and scrolling, and having a parent or loved one to help set bedtimes.
We found having a parent or loved one to help set bedtimes encourages sensible use of technology. fast-stock/Shutterstock Why do we blame blue light?
The blue light theory involves melatonin, a hormone that regulates sleep. During the day, we are exposed to bright, natural light that contains a high amount of blue light. This bright, blue light activates certain cells at the back of our eyes, which send signals to our brain that it’s time to be alert. But as light decreases at night, our brain starts to produce melatonin, making us feel sleepy.
It’s logical to think that artificial light from devices could interfere with the production of melatonin and so affect our sleep. But studies show it would require light levels of about 1,000-2,000 lux (a measure of the intensity of light) to have a significant impact.
Device screens emit only about 80-100 lux. At the other end of the scale, natural sunlight on a sunny day provides about 100,000 lux.
What’s the take-home message?
We know that bright light does affect sleep and alertness. However our research indicates the light from devices such as smartphones and laptops is nowhere near bright or blue enough to disrupt sleep.
There are many factors that can affect sleep, and bright, blue screen light likely isn’t one of them.
The take-home message is to understand your own sleep needs and how technology affects you. Maybe reading an e-book or scrolling on socials is fine for you, or maybe you’re too often putting the phone down way too late. Listen to your body and when you feel sleepy, turn off your device.
Chelsea Reynolds, Casual Academic/Clinical Educator and Clinical Psychologist, 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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