fraternal birth-order effect

fraternal birth-order effect
The proposition that a man with older brothers is more likely to be homosexual than a man without older brothers.

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  • Fraternal birth order and sexual orientation — A correlation between fraternal birth order and sexual orientation has been suggested by recent research. Ray Blanchard identified the association and referred to it as the fraternal birth order effect. The observation is that the more older… …   Wikipedia

  • Fraternal birth order and male sexual orientation — A correlation between fraternal birth order and male sexual orientation has been suggested by research. Ray Blanchard identified the association and referred to it as the fraternal birth order effect. The observation is that the more older… …   Wikipedia

  • Birth order — can affect human psychology, though many supposedly formative effects of birth order are instead related to other factors. Birth order is defined as a person s rank by age among his or her siblings. Birth order is often believed to have a… …   Wikipedia

  • Order of the Arrow — Owner …   Wikipedia

  • Homosexual orientation — is a sexual orientation. The term is used to refer to an enduring pattern of or disposition to experience sexual, affectional, or romantic attractions primarily to people of the same sex; it also refers to an individual’s sense of personal and… …   Wikipedia

  • Homosexuality — Sexual orientation Orientations Asexual · Bisexual · Heterosexual · Homosexual …   Wikipedia

  • Ray Blanchard — birth place = Hammonton, New Jersey, USA death date = death place = residence = Canada citizenship = United States, Canada ethnicity = fields = Psychology, Sexology workplaces = Centre for Addiction and Mental Health, Toronto alma mater =… …   Wikipedia

  • Environment and sexual orientation — Sexual orientation Orientations Asexual · Bisexual · Heterosexual · Homosexual Gender based alternative concepts Androphilia and gynephilia · Human female sexuality  …   Wikipedia

  • Neuroscience and sexual orientation — Sexual orientation Orientations Asexual · Bisexual · Heterosexual · Homosexual Gender based alternative concepts Androphilia and gynephilia · Human female sexuality  …   Wikipedia

  • Multiple birth — Quadruplet , quintuplet , etc. redirect here. For the musical use of the terms, see tuplet. Triplet brothers at graduation. Identical triplets are extremely rare, something that occurs only once in every 500,000 births. A multiple birth occurs… …   Wikipedia

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