Birth Order

  • NewsYahoo Canada Style

    New Study Finds Link Between Birth Order and Weight

    By Jenna Birch, Contributing Writer, Yahoo Health What does birth order have to do with weight? A lot, according to a new study. (Photo: GettyImages/Hanifa for Yahoo Health) Simply being the firstborn sister may put a woman at higher risk of becoming overweight or obese down the road, new research published in the Journal of Epidemiology & Community Health suggests. In the study, conducted at the University of Auckland’s Liggins Institute, Australian and Swedish researchers evaluated data on 13,

  • NewsGail Johnson

    Does birth order actually affect your IQ and personality? Not really, new study says

    Aside from intelligence, the University of Illinois study also looked at personality characteristics—such as conscientiousness, extroversion, and neuroticism—and yielded a similar finding. Involving 377,000 U.S. high school students, the study published in the Journal of Research in Personality is the largest of its kind to look at birth order, personality and intelligence. Firstborns tend to be more conscientious, less sociable, and more dominant than younger siblings as well as more agreeabl