Articles tagged with Birth Order
A UK study found that children of obese mothers are more likely to become obese adults, suggesting that societal and early-life factors play a significant role in obesity. The study analyzed data from over 17,000 people born in the same week in 1958 and found that these early life factors persisted through adulthood.
A new study found that mothers whose firstborn children experienced adverse childhood experiences had a significantly higher risk of having children with mental health problems. The study, published in The Lancet Public Health, analyzed data from over 333,000 families and found a 71% increased risk.
A new study finds that parents' perceptions shape twin dynamics, with typically developing twins taking the dominant role over their nontypically developing siblings. The research suggests that genetic similarity and asymmetry in abilities between twins drive dominance imbalances.
A study published in JAMA Pediatrics found that gender-affirming top surgery significantly improved chest dysphoria and gender congruence among transmasculine and nonbinary individuals designated female at birth. The procedure was also associated with enhanced body image, with minimal surgical complications reported.
A University of Houston study found that birth order has little-to-no effect on specific careers, contrary to previous research. Firstborns were actually more likely to pursue creative careers and attain higher job prestige and education.
A large-scale study of 187 explorers and 11,000 households found no correlation between birth order and risk-taking behavior in adulthood. The research suggests that family dynamics do not impact an individual's willingness to take risks in adulthood.
A new study found that first-born children are more likely to report parental involvement in sex education than later-born children. The study also revealed significant gender disparities in parental involvement, with men consistently reporting lower levels of parental engagement.
Research by Kieron Barclay and Mikko Myrskylä found that birth order differences in university subject choice explain half of the gap in siblings' long-term earnings. Later-borns tend to pursue less prestigious subjects like arts, journalism, and teaching.
A study of over 20,000 grown-ups found no substantial effects of birth order on central personality traits, including extraversion, emotional stability, and conscientiousness. Self-reported intellect showed a small effect, with firstborns reporting better vocabulary and less difficulty understanding abstract ideas.
A study published in JAMA Ophthalmology found that first-born individuals are more likely to be nearsighted than later-born individuals, with the association reduced when adjusting for educational exposure. The researchers suggest that reduced parental investment in education may contribute to this increased risk.
A massive study of 377,000 high school students found that first-borns have a one-IQ-point advantage over later-borns but the differences are statistically insignificant. First-borns tend to be more extroverted and conscientious, while later-borns have less anxiety, but these effects are infinitesimally small.
New studies examine how people react to terrorist threats, gamble for money vs suspense, and the link between sex motivation and satisfaction. Additionally, research challenges traditional birth order theories and reveals attentional biases in shopping situations.
Researchers found that attachment to mom predicts ability to cope with loss, while smaller family size is linked to higher intelligence. Additionally, tracking happiness daily has no impact on overall happiness levels, but increased symptoms of depression may lead to decreased happiness.
A new study challenges the long-held assumption that older children are generally smarter than their younger siblings. Researchers analyzed data from nearly 3,000 families and found no link between birth order and intelligence when controlling for environmental factors.
A large study found no link between MS risk and birth order position, contradicting the hygiene hypothesis. In fact, individuals with MS tended to be born later in larger sibships than expected.
Research investigates associations between male breast cancer, human papillomavirus (HPV) infections, and genetic variants in DNA repair genes. Ionizing radiation exposure is linked to higher male breast cancer incidence among atomic bomb survivors, while HPV detection is strongly associated with HIV status. Genetic polymorphisms in DN...
Researchers found that 46.7% of coronary heart disease patients were firstborn, with lower rates of cigarette smoking and similar risk factors compared to younger siblings. The study suggests primogeniture as an independent predisposing determinant of CHD, which should be taken into account when assessing global patient risk.
Research debunks popular belief on family size and intelligence, suggesting no direct causal link between the two. Instead, factors like parental IQ and genetic heritage may influence children's intelligence.