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How the Number of Siblings Influences Your Personality Traits

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Family dynamics are evolving dramatically. The global trend shows a rise in the number of childless individuals, with families increasingly opting for just one child.

The “one-child family” is becoming more common, potentially setting the stage for it to become the new standard in the future.

Factors such as economic uncertainty, escalating childcare costs, shifting gender roles, and the growing trend of women having children later in life — combined with environmental concerns — foster the perception that raising more than one child is challenging or even unfeasible.

As of 2022, 44% of households in the UK included only one child, compared to 41% with two children. Similarly, in the EU, 49% of families have just one child.

Unlike previous generations, where larger families were the norm, this shift is globally recognized. The global birth rate has plummeted from an average of 5 children per woman in 1960 to 2.3 children in 2020, with no end in sight for this downward trend.

Should we be concerned about the well-being of only children? Contrary to popular belief, they do not suffer from social isolation or undue entitlement. In fact, having one child may ultimately provide better outcomes for families.

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The Hidden Truth About Only Children

“It’s a widely acknowledged fact that only children are thriving,” says Susan Newman, a renowned parenting expert and social psychologist. “This should prompt parents who feel pressured to have more kids, especially those from earlier generations.”

Newman emphasizes how entrenched these stereotypes are, equating them to sexism and ageism, but also expresses hope that we are breaking free from the unjust stigma.

To trace the roots of the concept of only child syndrome, we revisit 1896 when child psychologists G. Stanley Hall and E.W. Bohannon studied the traits of only children. Their findings suggested a plethora of negative characteristics, branding only children as lonely, bossy, and spoiled — a notion that has perpetuated stereotypes to this day.

Despite criticism of this early research, its influence persists, overshadowing more recent studies that highlight the advantages of being an only child.

Dr. Adrian Mancillas, author of Challenging Stereotypes About Only Children, states that “research consistently shows that only children perform comparably to those with siblings in various social and personality metrics, with no notable behavioral discrepancies.”

While some only children may exhibit traits identified in the 1896 study, these characteristics can also be present in children with siblings. Ultimately, parental influence supersedes sibling presence in determining childhood happiness and social stability.

While siblings can shape a child’s experience, parents wield the greatest influence in raising a happy, well-adjusted adult. – Credit: Getty

That said, there are unique aspects to consider. “Only children receive their parents’ full attention and resources, while avoiding sibling rivalry,” explains Mancillas. However, such intense relationships may expose children to parental stress more acutely than those with siblings may experience.

What about the experiences of only children as they transition into adulthood? Studies indicate that those who grew up as only children often reflect positively on their childhood.

Newman refers to this phenomenon as a “one-child dynasty,” noting that only children are frequently inclined to have only one child as well.

The Rising Trend of One-Child Families

Could the uptick in one-child families signal a successful debunking of detrimental stereotypes? Newman identifies several factors contributing to this one-and-done trend.

“Women are increasingly starting families later, pursuing higher education and stable careers, significantly reshaping their life priorities,” she notes.

“Family structures are diversifying, with more single parents and individuals opting for adoption or IVF, redefining what it means to be a family today.”

As traditional gender roles evolve, so too does the notion of family. The practical aspects of having one child cannot be overlooked; by 2023, the expected cost of raising a child stands at £166,000 for married couples and £220,000 for single parents.

Credit: Getty/Catherine Delahaye

Environmental concerns are also a prominent factor. As awareness of climate issues rises, many choose to have fewer children to minimize their family’s carbon footprint.

However, the benefits of having only one child extend to parents as well. Research indicates that parents with one child report greater happiness. But the second child can significantly reduce overall happiness, and studies suggest happiness gains diminish with subsequent children.

This trend is particularly notable in the UK, US, and Canada, where parental support systems are less robust than in places like Germany, where free public childcare is available, and Romania, which provides extended parental leave.

As we look to the future, could the one-and-done trend persist? While birth rates are on the decline, many may find that being part of a one-child family leads to greater financial security and personal freedom. Ultimately, it appears only children are thriving.

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Source: www.sciencefocus.com

The Gut Microbiome: Influencing Our Personality Traits

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Fecal bacteria observed through an electron microscope

Science Photo Library / Alamy Stock Photo

Rats that received gut microbiomes from energetic human infants seem more inclined to explore their surroundings. This research suggests that the bacteria present in our guts during childhood may influence our personalities.

“This indicates that our microbes play an active role in emotional development, rather than merely being passive presence,” explains Harriet Scherekens from University College Cork, Ireland, who was not involved in the study.

Increasing research identifies a link between the microbial communities in our guts and various aspects of our well-being, emotions, and mood. For instance, individuals lacking certain gut bacteria types seem to face a higher risk of depression and anxiety.

While it remains uncertain whether bacteria are the cause of these emotional shifts or if the microbial communities alter in response to user actions, some evidence suggests that changes in the microbiome can influence an individual’s mood. For example, fecal transplants from depressed individuals to rats appear to induce depressive behavior. Conversely, depressed rodents receiving fecal transplants have shown improved symptoms upon preliminary examination.

To delve deeper into how the gut microbiome relates to temperament, Anna Artshinki and colleagues at the University of Turku in Finland conducted fecal transplants from infants into young rats.

Initially, the team evaluated the personalities of 27 toddlers aged 2.5 years using standard temperament assessments and an activity that encouraged play with bubble guns.

“Although we couldn’t study anxiety in 2-year-olds directly, we anticipated assessing behavioral differences, such as levels of inhibition versus sociability,” notes Artosinki.

From their evaluations, researchers classified 10 infants as energetic and 8 as inhibited and withdrawn. They then selected four energetic and four restrained infants (split evenly between genders) for fecal sample collection.

Fecal samples spiked with glycerol, alongside control samples, were transplanted into 53 22- or 23-day-old rats whose intestines had been pre-cleaned.

Artshinki’s team then subjected the rats to a variety of behavioral tests. They discovered that rats with microbiomes from energetic infants displayed a greater exploratory tendency compared to those receiving control implants or feces from inhibited infants.

To investigate how gut bacteria might influence the brain, the researchers also examined rat brain tissues for gene activity changes. This analysis indicated that rats receiving microbiomes from inhibited infants showed reduced activity in dopamine-producing neurons, a neurotransmitter linked to rewarding risk-taking behavior.

“This study effectively illustrates how the early childhood gut microbiome contributes to shaping behavioral tendencies,” Scherekens remarks. “By transferring microbiomes from children to rodents, researchers have created a valuable translation between microbes, human temperament, and brain function.”

This indicates a gut-brain pathway that impacts curiosity, reward, and motivation through the dopamine system, Scherekens adds.

Nonetheless, Artshinki cautions against overstating the implications. “Overall, adult temperament traits are strongly correlated with genetics, yet environmental factors—potentially including the microbiome—may play a role in certain behavioral distinctions.”

Artosinki emphasizes that whether microbes drive the differences in children’s behaviors remains an open question. It’s possible that children exhibiting more active traits interact with their environment and new foods in unique ways, thereby developing distinct microbiomes as a result.

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Source: www.newscientist.com

Gamers Uncover Traits of Human Gut Microbiota

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Scientific research revolves around solving complex problems, and so do computer games. In 2008, a group of scientists developed the first video game that allows non-scientists to aid research by solving puzzles based on real scientific data. That’s what they called the game foldit.

Since then, other scientists have developed similar games and contributed to fields such as genetics and physics. These games are collectively called: citizen science games Or CSG. Traditionally, researchers designed CSG games to focus on science elements rather than game elements. However, they report that this approach limits user engagement and primarily appeals to participants who already have a strong interest in science.

To overcome this challenge, a group of researchers from Switzerland, Canada, and the United States developed a CSG using game-first design principles. This means that they prioritized the entertainment aspect of the game before incorporating any scientific questions into it. They used this approach in their next game. borderlands science or BLS. The scientific objective of this game is to help researchers analyze the genome sequences of one million microorganisms from the human digestive system to understand their relationships and functions in human health. Scientifically, the analysis that the player was assisting with is called: Multiple sequence alignment.

The researchers used 953,000 sequenced fragments of genetic material called . 16S rRNA From human stool samples provided by participants. american gut project. These fragments are part of specific regions within the genome that are used to identify and compare different microorganisms. They first grouped the sequences into over 10,000 clusters, then removed outliers, and finally focused on a final set of 9,667 clusters for the game.

They designed puzzles for the BLS game based on sequences within these clusters. Players saw a grid of colorful bricks, each representing a DNA base such as A, T, C, or G. Their goal was to insert gaps between bricks based on unique patterns to improve matching and alignment of different colors and arrangements. – Matching skills used by humans when playing the game. Players had a limited number of moves, each level of the game had a score to clear before moving on to the next level, and players were challenged to find the best placement with as few moves as possible.

The researchers explained that they were not recruiting people to play the game. Instead, they released the game through an existing commercial video game called Borderlands 3. They noted that the game was released in 2020 and the data reported in the paper represents the first 16 months after release.

Researchers collected over 1.4 million puzzle solutions and filtered them based on how well they were ordered and how well they matched other players' solutions to keep only the highest quality ones. Ta. They combined the filtered solutions to create a composite alignment, which they used to construct a family tree showing the evolutionary relationships among gut microbes.

The team validated the results by comparing the alignment and tree to the results of existing alignment and tree construction methods. They showed that player-generated solutions outperformed these existing methods and improved their ability to infer microbial relationships. The researchers also investigated how BLS results can help detect meaningful biological patterns from these microorganisms. relationship. They reported that the BLS alignment grouped gut microbes based on several lifestyle factors, such as diabetes and alcohol intake, that influence the host's digestive health.

Researchers reported that more than 4 million participants have completed real-world scientific tasks since the release of BLS. This is a high retention rate compared to previous CSG efforts. They proposed that this BLS performance demonstrates that scientific tasks can be embedded within video games and achieve high levels of player engagement.

Additionally, the researchers sought feedback from players as part of the game's quality assurance. Players cited curiosity about science as the most common reason for participating. The team argued that a game-first design approach to developing citizen science games like BLS has benefits, including increasing scientific literacy among the public.

The researchers reported that BLS outperformed traditional sequence alignment methods in terms of scientific output without compromising data integrity. They concluded that the results showed that video games can provide the human resources needed to analyze vast amounts of genomic data that would otherwise be completed by small teams of scientists. Ta.


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Source: sciworthy.com