Why Do People Become Homosexual - 838 Words

â€Å"Why do people become homosexual?† has been the topic of debate as to what factors contribute to homosexuality. The following paper discusses two studies conducted to determine the cause of homosexuality through biological theories. The study as hand is the â€Å"Supplementary Analyses Regarding Langevin, Langevin and Curnoe’s (2007) findings of Fraternal Birth Order in Homosexual Men† by Ray Blanchard. The general theory of this study was to cross examine a recent article by Langevin, Langevin and Curnoe’s (2007) to determine the statistical power of the findings and examine older-sibling sex ratio as well as the fraternal birth order effect. Previous research has stated that the chance of homosexuality in later born males increases with†¦show more content†¦They then wanted to determine if the statistical power of the sub-samples were sufficient enough to determine a factual difference in fraternal birth order. They also wanted to investiga te how many of the patients from the laboratory had new brothers or sisters after they had already turned nineteen. In the original study, the sample included 1604 men which was then reduced due to potentially incomplete subships, to 1122 individuals in which 859 were heterosexual and 263 were homosexual. There were also two sub-samples, the first containing 698 individuals of which 525 were heterosexual and 173 were homosexual, excluding all individuals who were under thirty-one years of age. The second sub-sample excluded all individuals whose mothers were under forty-six years of age and contained 727 individuals of which 562 were heterosexual and 167 were homosexual. The researchers used the database of the Kurt Freund Laboratory at the Center for Addiction and Mental Health in Toronto, Ontario, Canada. The database consists of male patients â€Å"referred for phallometric assessment because of sexual offending or paraphilia† The patients were asked to document the sex an d age of every child delivered by their biological mothers. They also used patients assessed in the laboratory from 2000-2004. They then used t-tests and â€Å"Cohen’s d† equation from a