Older kids, on average, have slightly higher IQs than their younger siblings, do better in school, and tend to earn more money as adults, as abundant research has shown.
We must keep in mind though, the “go-get-em” spirit doesn't always translate into lots of cash. But if it did, the youngest sibling has the best chance because they are the ones most likely to throw their hat in the ring. So basically, according to science, the youngest of the bunch does become the most successful.
A recent study suggests that middle children are 45% more likely to become millionaires compared to their siblings.
In terms of other measures of success, such as income and career achievement, the evidence is also mixed. Some studies have found that first-born children tend to have higher incomes and more prestigious occupations than their younger siblings, while others have found no significant differences.
According to a 2016 Journal of Personality and Individual Differences study, younger children may have a better chance of succeeding. They are more likely to take career risks, which could potentially lead to greater success and wealth. Their family status may have influenced their risk-taking personality.
Middle children are often labelled as 'middle child syndrome' sufferers, which entails receiving the least attention from the parents. Middle children are more likely to be willing to compromise and are typically quite competitive to keep up with their older siblings.
Ultimately, there is no accurate way to predict what your baby will look like or even what features they might have, like eye or hair color or how tall they will be. All of your baby's features will come down to a combination of genes that can be influenced by other factors such as medical conditions and environment.
According to a study of 20,000 people, older siblings have a slightly higher IQ than their brothers and sisters. On average, each birth order loses 1.5 IQ points. But when it comes to personality…
This sensory focus helps interrupt escalating anxiety and supports calming responses. The rule is easy to apply in everyday situations. Children are guided to name three things they see, three things they hear, and move three body parts.
A household size of about four members is predictive of higher happiness levels. People in these households enjoy abundant and very satisfactory relationships. People who live on their own often experience lower levels of happiness, primarily due to lower levels of relational satisfaction.
Parents tend to favor younger siblings, daughters, and the more agreeable—often without realizing it. New research from BYU highlights how subtle parental preferences—based on birth order, personality, and gender—can shape sibling relationships and family dynamics.
Taylor Swift didn't come from the posh LA world of Hollywood. Neither was she a city girl growing up. But that didn't mean that she was the underdog singer who came from nothing. Swift came from a family that had the means to help her advance in her career.
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At its core, the 7-7-7 rule is exactly what it sounds like: spend 7 minutes in the morning, 7 minutes after school or work, and 7 minutes before bed in a dedicated, undivided connection with your child. During these short windows, the goal isn't productivity or problem-solving.
Science confirmed what we already knew: eldest daughters are out here winning and achieving. 🏆 A 2014 study found that firstborn girls are the most ambitious and successful sibling type.
In all, 31% of U.S. adults report that they have not had any children, while 14% have had one child, 28% have had two, 15% have had three, 7% have had four and 5% have had five or more. A 48% plurality of those without children and a slim 51% majority of parents of one each see having two children as ideal.
As a result, the thirdborn is often a calmer, more easy going child. The youngest (even of two) tends to be smiley and charming and gets a lot of attention for his sunny disposition.
Counts Objects Up to 5 (and sometimes to 10 with guidance)
Many 3-year-olds can count aloud from 1 to 10, though understanding that numbers correspond to actual quantities (one-to-one correspondence) may emerge gradually.
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However the researchers looked at it, first-borns had, on average, an IQ of 1.5 points higher than second-born siblings, who in turn had a 1.5 higher IQ than third-borns and so on.
A provocative study from the University of Cambridge suggests that intelligence may primarily be inherited from mothers. The key lies in the X chromosome—women have two, while men have only one—making it more likely that intelligence-related genes are passed down maternally.
Later-born children have lower IQs, on average, and these differences are quite large. For example, the difference between firstborn and second-born average IQ is on the order of one-fifth of a standard deviation, or about three IQ points.
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While mothers are often credited for passing down soft facial traits, researchers have found that when it comes to classic markers of physical beauty like facial symmetry, defined jawlines, cheekbone structure, and even the spacing of the eyes children actually have more in common with their fathers.
In experiments, babies consistently prefer people who help others and avoid those who show anger or harmful behavior. They're not judging “good” or “bad” like adults—but their brains are already wired to sense safety, kindness, and emotional intent.