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  • Massive study: Birth order has no meaningful effect on personality or IQ

    University of Illinois psychology professor Brent Roberts and postdoctoral researcher Rodica Damian conducted the largest study yet of birth order and personality. They found no meaningful relationship between birth order and personality or IQ.

    University of Illinois psychology professor Brent Roberts and postdoctoral researcher Rodica Damian conducted the largest study yet of birth order and personality. They found no meaningful relationship between birth order and personality or IQ.

    Photo by L. Brian Stauffer

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  • Editor's note:
    To reach Brent Roberts, call 217-333-2644; email bwrobrts@illinois.edu.
    To reach Rodica Damian, email ridamian@uh.edu.

     

    The paper, “The associations of birth order with personality and intelligence in a representative sample of U.S. high school students,” is available online or from the U. of I. News Bureau.