The associations of birth order with personality and intelligence in a representative sample of U.S. high school students

Rodica Ioana Damian, Brent W. Roberts

Research output: Contribution to journalArticlepeer-review

Abstract

We tested birth order associations with personality traits and intelligence using Project Talent, a representative sample (N=. 377,000) of U.S. high school students. Using a between-family design and several background factors (i.e., age, sex, sibship size, parental socio-economic status, and family structure), we were able to control for potential confounds, and estimate the links between birth order and outcomes across several different social categories. In addition to differences between firstborns and laterborns across the entire sample, we also tested birth rank trends in a sub-sample of targets from sibships of three, raised by two parents. Overall, the average absolute association between birth order and personality traits was .02, whereas the one between birth order and intelligence was .04.

Original languageEnglish (US)
Pages (from-to)96-105
Number of pages10
JournalJournal of Research in Personality
Volume58
DOIs
StatePublished - Oct 1 2015

Keywords

  • Birth order
  • Family background
  • Intelligence
  • Personality
  • Project Talent

ASJC Scopus subject areas

  • Social Psychology
  • Psychology(all)

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