Rodgers, JL; Cleveland, HH; Van Den Oord, E; Rowe, DC (2000). "Resolving the debate over birth order, family size, and intelligence". The American Psychologist. 55 (6): 599–612. doi:10.1037/0003-066X.55.6.599. PMID10892201.
Paulhus D.L.; Trapnell P.D.; Chen D. (1998). "Birth order effects on personality and achievement within families". Psychological Science. 10 (6): 482–488. doi:10.1111/1467-9280.00193. JSTOR40063474. S2CID29589929.
Ray Blanchard; Richard Lippa (2007). "Birth Order, Sibling Sex Ratio, Handedness, and Sexual Orientation of Male and Female Participants in a BBC Internet Research Project". Archives of Sexual Behavior. 36 (2): 163–76. doi:10.1007/s10508-006-9159-7. PMID17345165. S2CID18868548.
Miller EM (2000). "Homosexuality, Birth Order, and Evolution: Toward an Equilibrium Reproductive Economics of Homosexuality". Archives of Sexual Behavior. 29 (1): 1–34. doi:10.1023/A:1001836320541. PMID10763427. S2CID28241162.
Frisch M; Hviid A (2006). "Childhood family correlates of heterosexual and homosexual marriages: a national cohort study of two million Danes". Archives of Sexual Behavior. 35 (5): 533–47. doi:10.1007/s10508-006-9062-2. PMID17039403. S2CID21908113.
Paulhus D.L.; Trapnell P.D.; Chen D. (1998). "Birth order effects on personality and achievement within families". Psychological Science. 10 (6): 482–488. doi:10.1111/1467-9280.00193. JSTOR40063474. S2CID29589929.
Rodgers, JL; Cleveland, HH; Van Den Oord, E; Rowe, DC (2000). "Resolving the debate over birth order, family size, and intelligence". The American Psychologist. 55 (6): 599–612. doi:10.1037/0003-066X.55.6.599. PMID10892201.
Ray Blanchard; Richard Lippa (2007). "Birth Order, Sibling Sex Ratio, Handedness, and Sexual Orientation of Male and Female Participants in a BBC Internet Research Project". Archives of Sexual Behavior. 36 (2): 163–76. doi:10.1007/s10508-006-9159-7. PMID17345165. S2CID18868548.
Miller EM (2000). "Homosexuality, Birth Order, and Evolution: Toward an Equilibrium Reproductive Economics of Homosexuality". Archives of Sexual Behavior. 29 (1): 1–34. doi:10.1023/A:1001836320541. PMID10763427. S2CID28241162.
Frisch M; Hviid A (2006). "Childhood family correlates of heterosexual and homosexual marriages: a national cohort study of two million Danes". Archives of Sexual Behavior. 35 (5): 533–47. doi:10.1007/s10508-006-9062-2. PMID17039403. S2CID21908113.
Paulhus D.L.; Trapnell P.D.; Chen D. (1998). "Birth order effects on personality and achievement within families". Psychological Science. 10 (6): 482–488. doi:10.1111/1467-9280.00193. JSTOR40063474. S2CID29589929.
Ray Blanchard; Richard Lippa (2007). "Birth Order, Sibling Sex Ratio, Handedness, and Sexual Orientation of Male and Female Participants in a BBC Internet Research Project". Archives of Sexual Behavior. 36 (2): 163–76. doi:10.1007/s10508-006-9159-7. PMID17345165. S2CID18868548.
Miller EM (2000). "Homosexuality, Birth Order, and Evolution: Toward an Equilibrium Reproductive Economics of Homosexuality". Archives of Sexual Behavior. 29 (1): 1–34. doi:10.1023/A:1001836320541. PMID10763427. S2CID28241162.
Frisch M; Hviid A (2006). "Childhood family correlates of heterosexual and homosexual marriages: a national cohort study of two million Danes". Archives of Sexual Behavior. 35 (5): 533–47. doi:10.1007/s10508-006-9062-2. PMID17039403. S2CID21908113.
sulloway.org
Sulloway, F.J. (2001). Birth Order, Sibling Competition, and Human Behavior. In Paul S. Davies and Harmon R. Holcomb, (Eds.), Conceptual Challenges in Evolutionary Psychology: Innovative Research Strategies. Dordrecht and Boston: Kluwer Academic Publishers. pp. 39-83. "Full text"(PDF). (325 KB)